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DESIGN OF nMOS QUATERNARY FLIP-FLOPS AND THEIR APPLICATIONS 被引量:3
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作者 Xia Yinshui Wu Xunwei(Phys. Dept., Teacher’s College, Ningbo University, Ningbo 315211) (E. E. Dept., Hangzhou University, Hangzhou 310028) 《Journal of Electronics(China)》 1998年第4期347-356,共10页
By using the theory of clipping voltage-switches, two kinds of master/slave nMOS quaternary flip-flops are designed. These flip-flops have the capability of two-input presetting and double-rail complementary outputs. ... By using the theory of clipping voltage-switches, two kinds of master/slave nMOS quaternary flip-flops are designed. These flip-flops have the capability of two-input presetting and double-rail complementary outputs. It is shown that these flip-flops are effectively suitable to design nMOS quaternary sequential circuits by designing two examples of hexadecimal up-counter and decimal up-counter. 展开更多
关键词 Theory of CLIPPING voltage-switches NMOS QUATERNARY LOGIC flip-flops SEQUENTIAL circuit
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Structure and design method for pulse-triggered flip-flops at switch level 被引量:2
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作者 戴燕云 沈继忠 《Journal of Central South University》 SCIE EI CAS 2010年第6期1279-1284,共6页
A kind of structure and a design method using transmission voltage-switch theory for pulse-triggered flip-flops were proposed,which are suitable for all kinds of pulse-triggered flip-flops and no extra techniques are ... A kind of structure and a design method using transmission voltage-switch theory for pulse-triggered flip-flops were proposed,which are suitable for all kinds of pulse-triggered flip-flops and no extra techniques are needed to eliminate the switching activities of internal nodes.Based on the proposed structure and design technique,two pulsed flip-flops were implemented and simulated.The proposed pulsed flip-flops have simple circuit structures.HSPICE simulation shows that the proposed pulsed D flip-flop outperforms the conventional pulsed D flip-flop by 17.2% in delay and 30.1% in power-delay-product(PDP) and the proposed pulsed JK flip-flop has low power and small PDP compared with pulsed D pulsed flip-flops,confirming that the proposed structure and design technique are simple and practical. 展开更多
关键词 flip-flop pulse-triggered transmission voltage-switch theory low power
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A FAULT DETECTION SENSOR FOR CIRCUIT AGING USING DOUBLE-EDGE-TRIGGERED FLIP-FLOP 被引量:1
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作者 Yan Luming Liang Huaguo +1 位作者 Huang Zhengfeng Liu Yanbin 《Journal of Electronics(China)》 2013年第1期97-103,共7页
In nanoscale technology, transistor aging is one of the most critical problems that impact on the reliability of circuits. Aging sensor is a good online way to detect the circuit aging, which performs during the opera... In nanoscale technology, transistor aging is one of the most critical problems that impact on the reliability of circuits. Aging sensor is a good online way to detect the circuit aging, which performs during the operating time with no influence of the normal operation of circuits. In this paper, a Dou- ble-edge-triggered Detection Sensor for circuit Aging (DSDA) is proposed, which employs data signal of logic circuits as its clock to control the sampling process. The simulation is done by Hspice using 45 nm technology. The results show that this technique is not case of the detection precision is more than 80% under aging fault effectively with the 8% power cost and 30% sensitive to the process variations. The worst the different process variations. It can detect performance cost. 展开更多
关键词 Circuit aging Fault detection SENSOR Double-Edge-Triggered flip-flop (DETFF)
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On Switching of a Flip-Flop Jet Nozzle with Double Ports by Single-Port Control 被引量:1
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作者 Tatsuya Inoue Fumiaki Nagahata Katsuya Hirata 《Journal of Flow Control, Measurement & Visualization》 2016年第4期143-161,共20页
This research deals with the oscillation mechanism of a flip-flop jet nozzle with a connecting tube, based on the measurements of pressures and velocities in the connecting tube and inside the nozzle. The measurements... This research deals with the oscillation mechanism of a flip-flop jet nozzle with a connecting tube, based on the measurements of pressures and velocities in the connecting tube and inside the nozzle. The measurements are carried out varying: 1) the inside diameter d of the connecting tube;2) the length L of the connecting tube and 3) the jet velocity VPN from a primary-nozzle exit. We assume that the jet switches when a time integral reaches a certain value. At first, as the time integral, we introduce the accumulated flow work of pressure, namely, the time integral of mass flux through a connecting tube into the jet-reattaching wall from the opposite jet-un-reattaching wall. Under the assumption, the trace of pressure difference between both the ends of the connecting tube is simply modeled on the basis of measurements, and the flow velocity in the connecting tube is computed as incompressible flow. Second, in order to discuss the physics of the accumulated flow work further, we conduct another experiment in single-port control where the inflow from the control port on the jet-reattaching wall is forcibly controlled and the other control port on the opposite jet-un-reattaching wall is sealed, instead of the experiment in regular jet’s oscillation using the ordinary nozzle with two control ports in connection. As a result, it is found that the accumulated flow work is adequate to determine the dominant jet- oscillation frequency. In the experiment in single-port control, the accumulated flow work of the inflow until the jet’s switching well agrees with that in regular jet’s oscillation using the ordinary nozzle. 展开更多
关键词 flip-flop Jet Nozzle FLOWMETER FLUIDICS Mixing Flow Control
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An Overview of Non-Volatile Flip-Flops Based on Emerging Memory Technologies(Invited paper)
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作者 J.M.Portal M.Bocquet +8 位作者 M.Moreau H.Aziza D.Deleruyelle Y.Zhang W.Kang J.-O.Klein Y.-G.Zhang C.Chappert W.-S.Zhao 《Journal of Electronic Science and Technology》 CAS 2014年第2期173-181,共9页
Low power consumption is a major issue in nowadays electronics systems. This trend is pushed by the development of data center related to cloud services and soon to the Internet of Things (IoT) deployment. Memories ... Low power consumption is a major issue in nowadays electronics systems. This trend is pushed by the development of data center related to cloud services and soon to the Internet of Things (IoT) deployment. Memories are one of the major contributors to power consumption. However, the development of emerging memory technologies paves the way to low-power design, through the partial replacement of the dynamic random access memory (DRAM) with the non-volatile stand-alone memory in servers or with the embedded or distributed emerging non-volatile memory in IoT objects. In the latter case, non-volatile flip-flops (NVFFs) seem a promising candidate to replace the retention latch. Indeed, IoT objects present long sleep time and NVFFs offer to save data in registers with zero power when the application is idle. This paper gives an overview of NVFF architecture flavors for various emerging memory technologies. 展开更多
关键词 Emerging memory technology ferroelectric RAM low power magnetic RAM non-volatile flip-flops phase change RAM resistive RAM
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DESIGN OF TERNARY FLIP-FLOPS AND SEQUENTIAL CIRCUITS BASED UPON U_h GATE
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作者 沈继忠 陈偕雄 《Journal of Electronics(China)》 1993年第4期356-364,共9页
According to the next-state equations of various ternary flip-flops(tri-flop),whichare based upon ternary modular algebra,various ternary flip-flops are implemented by usinguniversal-logic-modules,U_hs.Based on it,ter... According to the next-state equations of various ternary flip-flops(tri-flop),whichare based upon ternary modular algebra,various ternary flip-flops are implemented by usinguniversal-logic-modules,U_hs.Based on it,ternary sequential circuits are implemented by usingarray of universal-logic-modules,U_hs. 展开更多
关键词 TERNARY modular ALGEBRA Universal-logic-module TERNARY flip-flops(tri-flop) TERNARY SEQUENTIAL circuits
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Comparison of D-flip-flops and D-latches:influence on SET susceptibility of the clock distribution network
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作者 Pei-Pei Hao Shu-Ming Chen 《Nuclear Science and Techniques》 SCIE CAS CSCD 2019年第2期91-100,共10页
As technology scales down, clock distribution networks(CDNs) in integrated circuits(ICs) are becoming increasingly sensitive to single-event transients(SETs).The SET occurring in the CDN can even lead to failure of th... As technology scales down, clock distribution networks(CDNs) in integrated circuits(ICs) are becoming increasingly sensitive to single-event transients(SETs).The SET occurring in the CDN can even lead to failure of the entire circuit system. Understanding the factors that influence the SET sensitivity of the CDN is crucial to achieving radiation hardening of the CDN and realizing the design of highly reliable ICs. In this paper, the influences of different sequential elements(D-flip-flops and D-latches, the two most commonly used sequential elements in modern synchronous digital systems) on the SET susceptibility of the CDN were quantitatively studied. Electrical simulation and heavy ion experiment results reveal that the CDN-SET-induced incorrect latching is much more likely to occur in DFF and DFF-based designs. This can supply guidelines for the design of IC with high reliability. 展开更多
关键词 CLOCK distribution NETWORK D-flip-flop D-latch Reliability Single-event transient SUSCEPTIBILITY
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RESEARCH INTO TERNARY EDGE-TRIGGERED JKL FLIP-FLOP
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作者 吴浩敏 庄南 《Journal of Electronics(China)》 1991年第3期268-275,共8页
The design of ternary edge-triggered JKL-type flip-flop is proposed.The computersimulation and the test in experimental circuit made up with TTL gate show this flip-flop has theexpected logic functions.
关键词 Multiple-valued LOGIC flip-flop LOGIC design
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Flip-Flop Flow Control inside Streamwise Diverging Diamond-Shaped Cylinder Bundles with Concavities
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作者 Shuichi Torii Shizaburo Umeda 《Journal of Flow Control, Measurement & Visualization》 2013年第3期77-85,共9页
The flow visualization work with the aid of PIV and Piezometer deals with flip-flop flow around diamond-shaped cylinder bundle revised with concavities on both bundle walls. It is disclosed that 1) the concavity const... The flow visualization work with the aid of PIV and Piezometer deals with flip-flop flow around diamond-shaped cylinder bundle revised with concavities on both bundle walls. It is disclosed that 1) the concavity constructed on both side-walls of a diamond cylinder induces a substantial change in the flow patterns in the exit jet-stream field and jet- stream dispersion, 2) pressure characteristics are quantitatively measured in a diverging-flow region in diamond cylinder bundles with concavityand in its downstream region, and 3) flip-flop flow occurs in the flow passages and its occurrence condition is obtained. 展开更多
关键词 flip-flop Flow Streamwise Diverging Diamond-Shaped CYLINDER Bundle PIV Measurement CONCAVITY
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Low power and high speed explicit-pulsed double-edge triggered level converting flip-flop
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作者 戴燕云 Shen Jizhong 《High Technology Letters》 EI CAS 2010年第2期204-209,共6页
Variable supply voltage-clustered voltage scaling (VS-CVS) scheme can be very effective in reducing power consumption of CMOS circuits without degrading system performance. Level converting flip-flops (LCFFs) are ... Variable supply voltage-clustered voltage scaling (VS-CVS) scheme can be very effective in reducing power consumption of CMOS circuits without degrading system performance. Level converting flip-flops (LCFFs) are key elements in the CVS scheme. In this paper, a new explicit-pulsed double-edge triggered level converting flip-flop (nEP-DET-LCFF) is proposed, which employs double-edge triggering technique, dynamic structure, explicit pulse generator, conditional discharge technique and proper arrangement of stacked nMOS transistors to efficiently perform latching and level converting functions simultaneously. The proposed nEP-DET-LCFF combines merits of both conventional explicit-LCFFs and implicit-LCFFs. Simulation shows the proposed nEP-DET-LCFF has improvement of 19.2% -46% in delay, and 19.4% - 52.9% in power-delay product (PDP) as compared with the published LCFFs. 展开更多
关键词 level converter flip-flop low power variable supply voltage
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An Improved Design for an All-Optical Flip-Flop Based on a Nonlinear 3-Sections DFB Laser Cavity
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作者 Hossam Zoweil 《Optics and Photonics Journal》 2016年第5期87-100,共14页
A new all optical flip-flop based on a 3-sections nonlinear semiconductor DFB laser structure is proposed and simulated. The operation of the device does not require a holding beam. Electrical current injection into a... A new all optical flip-flop based on a 3-sections nonlinear semiconductor DFB laser structure is proposed and simulated. The operation of the device does not require a holding beam. Electrical current injection into an active layer provides optical gain to the laser mode. The wave-guiding layer consists of a linear grating section centered between 2 detuned nonlinear grating sections. The average refractive index in the nonlinear sections is slightly higher than the refractive index of the middle section. A negative nonlinear refractive index coefficient exists along the nonlinear sections. In the “OFF” state, the DFB structure does not provide enough optical feedback to lase due to the detuned sections. At high light intensity in structure, “ON” state, detuning decreases and the DFB structure allows for a laser mode that sustains the decrease in detuning to exist. The nonlinearity is provided by direct photon absorption at the Urbach tail. Numerical simulations using GPGPU computing show nanoseconds transition times between “OFF” and “ON” states. 展开更多
关键词 All-Optical flip-flop Distributed Feedback Laser NONLINEARITY SWITCHING
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Numerical Simulation of an All Optical Flip-Flop Based on a Nonlinear Distributed Bragg Reflector Laser Structure
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作者 Hossam Zoweil 《Optics and Photonics Journal》 2016年第9期217-228,共13页
A new design for an all optical flip flop is introduced. It is based on a nonlinear Distributed Bragg Reflector (DBR) semiconductor laser structure. The device does not require a holding beam. An optical gain medium c... A new design for an all optical flip flop is introduced. It is based on a nonlinear Distributed Bragg Reflector (DBR) semiconductor laser structure. The device does not require a holding beam. An optical gain medium confined between 2 Bragg reflectors forms the device. One of the Bragg reflectors is detuned from the other by making its average refractive index slightly higher, and it has a negative nonlinear coefficient that is due to direct absorption at Urbach tail. At low light intensity in the structure, the detuned Bragg reflector does not provide optical feedback to start a laser mode. An optical pulse injected to the structure reduces the detuning of the nonlinear Bragg reflector and a laser mode builds up. The device is reset by detuning the second Bragg reflector optically by an optical pulse that generates electron-hole pairs by direct absorption. A mathematical model of the device is introduced. The model is solved numerically in time domain using a general purpose graphics processing unit (GPGPU) to increase accuracy and to reduce the computation time. The switching dynamics of the device are in nanosecond time scale. The device could be used for all optical data packet switching/routing. 展开更多
关键词 All-Optical flip-flop Distributed Bragg Reflector Nonlinear Grating GPGPU
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Simulations of a Novel All-Optical Flip-Flop Based on a Nonlinear DFB Laser Cavity Using GPGPU Computing
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作者 Hossam Zoweil 《Optics and Photonics Journal》 2016年第8期203-215,共13页
A new all-optical flip-flop based on a nonlinear Distributed feedback (DFB) structure is proposed. The device does not require a holding beam. A nonlinear part of the grating is detuned from the remaining part of the ... A new all-optical flip-flop based on a nonlinear Distributed feedback (DFB) structure is proposed. The device does not require a holding beam. A nonlinear part of the grating is detuned from the remaining part of the grating and has negative nonlinear coefficient. Optical gain is provided by an injected electrical current into an active layer. In the OFF state, due to the detuned section, no laser light is generated in the device. An injected optical pulse reduces the detuning of the nonlinear section, and the optical feedback provided by the DFB structure generates a laser light in the structure that sustains the change in the detuned section. The device is switched “OFF” by detuning another section of the grating by a Reset pulse. The Reset pulse reduces the refractive index of that section by the generation of electron-hole pairs. The Reset pulse wavelength is adjusted such that the optical gain provided by the active layer at that wavelength is zero. The Reset pulse is prevented from reaching the nonlinear detuned section by introducing an optical absorber in the laser cavity to attenuate the pulse. The device is simulated in time domain using General Purpose Graphics Processing Unit (GPGPU) computing. Set-Reset operations are in nanosecond time scale. 展开更多
关键词 All-Optical flip-flop BISTABILITY DFB Laser Urbach Tail
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An Improved Power Efficient Clock Pulsed D Flip-flop Using Transmission Gate
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作者 B.Syamala M.Thamarai 《Journal of Electronic & Information Systems》 2023年第1期26-35,共10页
Recent digital applications will require highly efficient and high-speed gadgets and it is related to the minimum delay and power consumption.The proposed work deals with a low-power clock pulsed data flip-flop(D flip... Recent digital applications will require highly efficient and high-speed gadgets and it is related to the minimum delay and power consumption.The proposed work deals with a low-power clock pulsed data flip-flop(D flip-flop)using a transmission gate.To accomplish a power-efficient pulsed D flip-flop,clock gating is proposed.The gated clock reduces the unnecessary switching of the transistors in the circuit and thus reduces the dynamic power consumption.The clock gating approach is employed by using an AND gate to disrupt the clock input to the circuit as per the control signal called Enable.Due to this process,the clock gets turned off to reduce power consumption when there is no change in the output.The proposed transmission gate-based pulsed D flip-flop’s performance with clock gating and without clock gating circuit is analyzed.The proposed pulsed D flip-flop power consumption is 1.586μw less than the without clock gated flip-flop.Also,the authors have designed a 3-bit serial-in and parallel-out shift register using the proposed D flip-flop and analyzed the performance.Tanner Electronic Design Automation tool is used to simulate all the circuits with 45 nm technology. 展开更多
关键词 Pulsed D flip-flop Clock gating Low power Shift register Transmission gate
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和频振动光谱研究多晶金电极/溶液界面乙腈分子取向的flip-flop行为
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作者 黄芝 唐鑫 +3 位作者 邓罡华 周恩财 王鸿飞 郭源 《电化学》 CAS CSCD 北大核心 2011年第2期134-138,共5页
应用和频振动光谱研究乙腈/金电极界面吸附,观测到乙腈的甲基振动峰强度随电极电势而变化.当电极电势越过零电荷电势(pzc)时,甲基振动峰符号发生反转,这意味着该基团取向发生反转(flip-flop).由此而推断乙腈分子在金电极界面的吸附构型... 应用和频振动光谱研究乙腈/金电极界面吸附,观测到乙腈的甲基振动峰强度随电极电势而变化.当电极电势越过零电荷电势(pzc)时,甲基振动峰符号发生反转,这意味着该基团取向发生反转(flip-flop).由此而推断乙腈分子在金电极界面的吸附构型.即在零电荷电势下,电极界面吸附的乙腈分子构型为甲基靠近电极表面而腈基远离电极表面;高于零电荷电势,则变为腈基靠近电极表面而甲基远离电极表面. 展开更多
关键词 和频振动光谱 取向反转 金电极 乙腈
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Flip-Flop Flow Characteristics inside Streamwise Diverging Diamond-Shaped Cylinder Bundles 被引量:1
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作者 Shinzaburo Umeda Shuichi Torii 《材料科学与工程(中英文A版)》 2012年第9期616-623,共8页
关键词 流量特性 圆筒 石形 触发器 速度变化率 喷射流 振荡控制 速度矢量
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InSb1280×1024中波红外探测器研制进展
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作者 宁提 米南阳 +3 位作者 李忠贺 黄婷 李春领 康键 《激光与红外》 北大核心 2025年第9期1331-1335,共5页
第三代InSb红外探测器主要以更大面阵规格和更小像元间距为发展方向。本文介绍了中国电科十一所在InSb 1280×1024中波红外探测器的研制进展。通过优化InSb器件的PN结浓度、设计小尺寸低噪声读出电路、突破大面阵InSb混成芯片工艺,... 第三代InSb红外探测器主要以更大面阵规格和更小像元间距为发展方向。本文介绍了中国电科十一所在InSb 1280×1024中波红外探测器的研制进展。通过优化InSb器件的PN结浓度、设计小尺寸低噪声读出电路、突破大面阵InSb混成芯片工艺,成功研制出25μm、15μm、和10μmInSb 1280×1024中波红外探测器组件。更大的阵列规模以及更小的像元间距满足了光电系统高分辨、小型化、低功耗的要求。这三款探测器可以用于制导、导弹预警、7×24 h安全监控等领域。 展开更多
关键词 锑化铟 第三代红外探测器 1280×1024 10μm 倒装互连
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基于DyCML的改进型三阶段抗功耗攻击型D触发器
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作者 姚茂群 李聪辉 +1 位作者 李海威 陈冉 《浙江大学学报(理学版)》 北大核心 2025年第4期424-430,共7页
功耗攻击是一种通过统计电路的功耗信息得到敏感数据信息的攻击手段。作为电路的重要组成单元,触发器的抗功耗攻击水平与电路的安全性能息息相关,为此提出一种抗功耗攻击型触发器。通过引入“预充电-求值-放电”三阶段逻辑,提出了改进... 功耗攻击是一种通过统计电路的功耗信息得到敏感数据信息的攻击手段。作为电路的重要组成单元,触发器的抗功耗攻击水平与电路的安全性能息息相关,为此提出一种抗功耗攻击型触发器。通过引入“预充电-求值-放电”三阶段逻辑,提出了改进型的三阶段动态电流模式逻辑D触发器(improved three-phase dynamic current mode logic-based D flip-flop,TDyCML_FF),避免了因负载电容不均衡引起的电路功耗不恒定等安全问题。同时对三阶段逻辑结构进行了改进,由电路内部节点信号生成放电信号,从而避免通过减缓时钟频率或消除放电信号对其进行攻击,提高了电路的抗功耗攻击性能。通过Hspice仿真实验,并引入归一化能量偏差(NED)和归一化标准偏差(NSD)2个量化参数,将TDyCML_FF感应放大逻辑触发器(SABL_FF)、三阶段双轨预充电逻辑触发器(TDPL_FF)等抗功耗攻击型触发器进行了对比,证明TDyCML_FF具有较高的抗功耗攻击性能。 展开更多
关键词 三阶段逻辑 侧信道攻击 功耗攻击 触发器设计
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倒装式碳化硅高温动态压力传感器封装仿真研究
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作者 李永伟 郭晋秦 +6 位作者 乔俊福 史建伟 张宇 张鑫 戴丽莉 芦婧 赵志诚 《传感技术学报》 北大核心 2025年第1期62-67,共6页
面向航空发动机高温测试环境中动态压力测试需求,利用有限元仿真分析软件从碳化硅高温压力传感器封装结构、高温密封方法设计及封装结构尺寸优化方面对碳化硅高温压力传感器封装进行了研究。封装设计层面,建立了倒装式传感器结构模型;... 面向航空发动机高温测试环境中动态压力测试需求,利用有限元仿真分析软件从碳化硅高温压力传感器封装结构、高温密封方法设计及封装结构尺寸优化方面对碳化硅高温压力传感器封装进行了研究。封装设计层面,建立了倒装式传感器结构模型;为降低封装热应力的影响,采用厚度为0.3 mm的玻璃密封层实现高温气密性,厚度为0.2 mm,直径为6 mm的无机胶粘合层实现芯片固定。性能指标层面,频响为1.78 kHz,固有频率为55.31 kHz,具有动态响应频率高特点,为进一步进行碳化硅高温压力传感器工艺制备提供了理论支撑。 展开更多
关键词 碳化硅 高温压力传感器 仿真分析 封装设计 倒装式
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基于3390nm中波红外干涉仪红外材料折射率均匀性测量
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作者 黄一飞 袁彪 +1 位作者 陈冕成 陈磊 《光学技术》 北大核心 2025年第1期82-86,共5页
在中远红外波段,由于红外材料无法透射可见光,材料的均匀性测量相对困难,然而近年来红外材料的加工精度需求越来越高,因此实现红外材料均匀性的准确测量迫在眉睫。当前的检测手段中,干涉法作为一种非接触高精度的检测手段得到广泛应用... 在中远红外波段,由于红外材料无法透射可见光,材料的均匀性测量相对困难,然而近年来红外材料的加工精度需求越来越高,因此实现红外材料均匀性的准确测量迫在眉睫。当前的检测手段中,干涉法作为一种非接触高精度的检测手段得到广泛应用。本研究针对红外材料的非均匀性进行了测量,采用波长为3390nm的中红外干涉仪进行实验。通过透射法对同一元件进行测量,并用翻转法验证结果,验证了本干涉仪的精度和准确性。同时,利用本干涉仪与Zygo干涉仪对熔融石英材质的元件进行了对比实验,结果表明干涉仪的测量精度能达到要求。这项研究为红外材料非均匀性的准确测量提供了重要参考,具有一定的理论和实际意义。 展开更多
关键词 中红外 非均匀性 翻转法 透射法
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