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DISPERSED PHASE HOLDUP AND DROP SIZE DISTRIBUTION IN A ROTATING PERFORATED DISK CONTACTOR 被引量:1
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作者 冯毓如 裘元焘 时钧 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1991年第1期28-37,共10页
Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operat... Hydrodynamic characteristics of rotating perforated disk contactor(RPDC)were studied with emulsionwater system.The emulsion was dispcrsed in water and its holdup was measured.The effects of columndimensions and operating conditions on holdup and characteristic velocity were studied.By using the methodof dimensional analysis,the authors obtained two experimental correlations for estimating holdup and characteristic velocity respectively.Drop size distribution was studied photographically.The experimental results showedthat drop size distribuiion could be described by upper-limit log-normal distribution. 展开更多
关键词 ROTATING estimating EMULSION umber rotor dispersed PHOTOGRAPH eliminate DISTR dimensions
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WORLD JOURNAL OF ACUPUNCTURE-MOXIBUSTION CONTRIBUTIONS WANTED
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《World Journal of Acupuncture-Moxibustion》 1995年第3期2-2,共1页
1. Contributions concerned with all aspects of acupuncture and tnoxibustion as f0llows are wel-come:(1) Clinical reports and observations; (2) Experimental researches; (3) Acupuncture anesthesiaand its principle; (4) ... 1. Contributions concerned with all aspects of acupuncture and tnoxibustion as f0llows are wel-come:(1) Clinical reports and observations; (2) Experimental researches; (3) Acupuncture anesthesiaand its principle; (4) Education and academic lectures; (5) History and ancient literatures; (6) Re-view; (7) Information and news; (8) Acupuncture Instruments. 展开更多
关键词 ACUPUNCTURE ACUPUNCTURE concerned ANCIENT umber charts
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FUZZY次对称方阵的可实现问题
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作者 杨炳良 《湖州师范学院学报》 1988年第5期21-28,共8页
“L-FUZZY次对称方阵”B称为可实现的,如存在A=(a_i)_(?),使用B=A·A^+,其中A^+为FUZZY旋转矩阵,此时σ(B)=min{S|(?)A∈L^(n×s),A·A^+=B}称为B的容度.本文讨论FUZZY次对称方阵的一些性质;证明了FUZZY次对称方阵B可实现... “L-FUZZY次对称方阵”B称为可实现的,如存在A=(a_i)_(?),使用B=A·A^+,其中A^+为FUZZY旋转矩阵,此时σ(B)=min{S|(?)A∈L^(n×s),A·A^+=B}称为B的容度.本文讨论FUZZY次对称方阵的一些性质;证明了FUZZY次对称方阵B可实现的充要条件是b_(i,n-j+1)≤b_(i,n-i+1);当B又是对称方阵,可实现的充要条件是b_(ij)=b_(j,n-j+1),b_(ij)≤b_(ii)且ββ(B)是容度. 展开更多
关键词 FUZZY 转置矩阵 容度 旋转矩阵 SYMMETRICAL 完全分配格 最大元 最小元 MINOR umber
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Wide scope pollution-flashover of 500 KV transmission lines—causes and preventive countermeasures
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作者 Xiang Liren Su Zhiyi Li Peiguo Electric Power Research Institute,MOE Zhou Qingchang 《Electricity》 1991年第1期44-48,共5页
During two years odd period from Dec.1987 to Feb.1990,there had been repeatedly pollution-flashoverfailures on our 500 kV transmission lines,resulting in a wide scopeblackout.There were eleven 500 kV lines altogether ... During two years odd period from Dec.1987 to Feb.1990,there had been repeatedly pollution-flashoverfailures on our 500 kV transmission lines,resulting in a wide scopeblackout.There were eleven 500 kV lines altogether in North-east,East and North China power grids,where pollution-flashover failureshappened one after another on 36 transmission line towers (poles).Since 500 kV transmission lines are the main trunks of high 展开更多
关键词 strings repeatedly eleven PREVENTIVE adjustment GASES overs transm arouse umber
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Archaeological Find at the Longxing TempleCauses a Sensation
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《China & The World Cultural Exchange》 1997年第4期39-40,共2页
关键词 umber served
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英语如何表示序号
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作者 王文勤 《良师(小学1-2年级)》 2004年第24期33-33,共1页
关键词 专有名词 umber 把数
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对基于广义斐波那契数列型背包体制的密码分析
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作者 李大兴 《信息安全与通信保密》 1991年第1期35-40,共6页
本文通过对广义斐波那契数列性质的研究,指出基于广义斐波那契数列的背包体制要么不能正确加解密,要么是Merkle—Hellman超递增体制的特款,因而是不安全的。最后,对背包体制的脆弱性实质进行一些讨论。
关键词 斐波那契数 密码分析 umber 数字签名 背包公钥密码 加密密钥 背包问题 贪心算法 局域网络 计算保密
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NUMBER THEORETIC METHODS IN APPLIED STATISTICS (Ⅱ) 被引量:4
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作者 王元 方开泰 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1990年第3期384-395,共12页
In this paper, the authors give some applications of F-uniformly distributedsequences, which are suggested in their previous paper under the same title, in experimen-tal design, experiments with mixtures, geometric pr... In this paper, the authors give some applications of F-uniformly distributedsequences, which are suggested in their previous paper under the same title, in experimen-tal design, experiments with mixtures, geometric probability and simulation. 展开更多
关键词 UNIFORMLY MIXTURES UNIFORM GENERA umber PROBABILITY deviation OVERLAP 砂城 minimizing
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ON RELATIONS BETWEEN THE COVERING NUMBER OF A GRAPH AND ITS COMPLEMENTARY GRAPH 被引量:1
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作者 张忠辅 《Chinese Science Bulletin》 SCIE EI CAS 1989年第14期1226-1226,共1页
Let G(V, E) be a simple graph, A_T(?)VUE. A_T is called a total covering of G, if (?)x∈VUE, it holds that x∈A_T or xy∈A_T(y∈V\A_T) or x∈E, u∈A_T, v∈V\A_T, uv=x; A_T is called a minimum total covering, if|A_T~′... Let G(V, E) be a simple graph, A_T(?)VUE. A_T is called a total covering of G, if (?)x∈VUE, it holds that x∈A_T or xy∈A_T(y∈V\A_T) or x∈E, u∈A_T, v∈V\A_T, uv=x; A_T is called a minimum total covering, if|A_T~′|≥|A_T| for any total covering A_T~′; furthermore, |A_T| is called the total covering number of G, 展开更多
关键词 COVERING furthermore holds EXCEEDING umber INTEGER smallest GREATEST
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STUDY ON RHEOLOGICAL BEHAVIOR OF THE MELTED POLYMER——RELATIONSHIP BETWEEN η_α AND _n
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作者 常棉 张希庆 +2 位作者 曹永华 王梓杰 王少君 《Chinese Science Bulletin》 SCIE EI CAS 1988年第10期837-842,共6页
An experimental study on rheological behavior of the melted polymer, with the aid of the theory of the three-parameter model suggested by the author, is conducted. A practical equation below is derived through analysi... An experimental study on rheological behavior of the melted polymer, with the aid of the theory of the three-parameter model suggested by the author, is conducted. A practical equation below is derived through analysing the melted law of η. and (?)_n, 展开更多
关键词 RHEOLOGICAL VISCOSITY OVERCOME AND umber AUDIO removed CALCULATING introd haver
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LINEAR COMBINATION OF UNIT ORBITAL APPROXIMATION——THEORY AND NUMERICAL CALCULATION METHOD
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作者 叶元杰 杨忠志 唐敖庆 《Chinese Science Bulletin》 SCIE EI CAS 1986年第20期1390-1394,共5页
Up to now, the Born-Karmen boundary condition is still being mostly used for the quantum chemistry calculation of the molecular system with repeated units. But in fact, most molecular systems do not satisfy this condi... Up to now, the Born-Karmen boundary condition is still being mostly used for the quantum chemistry calculation of the molecular system with repeated units. But in fact, most molecular systems do not satisfy this condition. Some chemists have used the non-periodic condition to treat conjugate systems and have got many meaningful results. 展开更多
关键词 meaningful CONJUGATE satisfy umber mostly SYMMETRIC partitioning ITERATION TRIANGULAR repeated
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THE RULE OF HOMOLOGOUS LINEARITY OF THE INTERSTELLAR POLYYNECYANIDES AND THE ESTIMATION OF THE EVOLUTION AGE OF TMC-1
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作者 赵南生 何维凌 《Chinese Science Bulletin》 SCIE EI CAS 1985年第6期759-763,共5页
Ⅰ. INTRODUCTION In 1971, HCN was discovered in the interstellar space by means of radio telescope, and afterwards HC3N was detected in the same year. In 1976, HC5N was determined in TMC-1. All of these discoveries at... Ⅰ. INTRODUCTION In 1971, HCN was discovered in the interstellar space by means of radio telescope, and afterwards HC3N was detected in the same year. In 1976, HC5N was determined in TMC-1. All of these discoveries attracted much general attention. They were con- 展开更多
关键词 rotation telescope umber latter deter drawn INFERIOR ORBITAL SERIAL esses
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EXPERT SYSTEM OF PHYSICAL CHEMISTRY
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作者 韦统师 《Chinese Science Bulletin》 SCIE EI CAS 1985年第5期705-,共1页
This system is composed of a series of files. Its main file is ESPC. There are eight subprogram files and three data files in the system. Their names are SUB-2, SUB-5, SUB-6, SUB-7, SUB-9, SUB-10, SUB-11, SUB-14, DA-1... This system is composed of a series of files. Its main file is ESPC. There are eight subprogram files and three data files in the system. Their names are SUB-2, SUB-5, SUB-6, SUB-7, SUB-9, SUB-10, SUB-11, SUB-14, DA-1, DA-2, DA-3. The system includes the following 14 problems: (a) ideal gas law equation; (b) Van der 展开更多
关键词 FILES NAMES KIRCHHOFF umber TEMPER STORE revised programs
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A RESULT ON ZERO DISTRIBUTION OF A CLASS OF ANALOGOUS POLYNOMIAL SYSTEMS
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作者 高堂安 王则柯 《Chinese Science Bulletin》 SCIE EI CAS 1989年第12期1055-1055,共1页
Let P: C<sup>n</sup>→C<sup>n</sup> be an analogous polynomial system, where C<sup>n</sup> is the n-dimensional complex space. By an analogous polynomial system, we mean that each o... Let P: C<sup>n</sup>→C<sup>n</sup> be an analogous polynomial system, where C<sup>n</sup> is the n-dimensional complex space. By an analogous polynomial system, we mean that each of its components is a finite sum of terms aZ<sub>1</sub><sup>β</sup>1…Z<sub>n</sub><sup>β</sup>n, where a is a complex number, Z<sub>j</sub> a complex variable, and β<sub>j</sub> a nonnegative real number, j=1,…, n. For leach term in each component, consider the sum β<sub>1</sub>+…+β<sub>n</sub>. Let a<sub>j</sub> be the maximum 展开更多
关键词 analogous POLYNOMIAL CLASS NONNEGATIVE compo uniquely umber ARBITRARY
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ARITHMETIC OF n-QUADRATIC ALGEBRAIC FUNCTION FIELDS
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作者 张贤科 《Chinese Science Bulletin》 SCIE EI CAS 1987年第17期1157-1161,共5页
Let K=F_q(t) be the rational function field with the transcendental element t over F_q, F_q the field of q elements of odd characteristic. Any finite extension of k is called an algebraic function field. In this note,... Let K=F_q(t) be the rational function field with the transcendental element t over F_q, F_q the field of q elements of odd characteristic. Any finite extension of k is called an algebraic function field. In this note, we study the 展开更多
关键词 ALGEBRAIC rational DISCRIMINANT umber DIVISOR FORMULAE monic PROPERLY quadratic assume
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SUITABILITY OF FLUX-PROFILE MODEL IN STATIONARY STRATIFICATION OF ATMOSPHERE SURFACE LAYER
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作者 张翼 《Chinese Science Bulletin》 SCIE EI CAS 1988年第2期132-136,共5页
Ⅰ. INTRODUCTION The similarity theory method, put forward by Monin and Obukhov, has been widely applied to the modern study of turbulence and practical calculation. Development of observation technique of surface lay... Ⅰ. INTRODUCTION The similarity theory method, put forward by Monin and Obukhov, has been widely applied to the modern study of turbulence and practical calculation. Development of observation technique of surface layer in atmosphere, especially the direct measuring method of turbulence such as the eddy correlation method leads to 展开更多
关键词 turbulence SURFACE TURBULENT SIMILARITY instrument SCALING SUITABILITY umber STATIONARY deviation
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THE COMPLETENESS AND APPROXIMATION OF HU HAICHANG'S SOLUTION
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作者 张鸿庆 王震宇 《Chinese Science Bulletin》 SCIE EI CAS 1986年第10期667-670,共4页
It is well known that the elastic displacement U=(u^1, u^2, u^3) of an isotropie body A without volume forces satisfies homogeneous Lame’s differential
关键词 straight PARTITION umber SUBSET dense SOLVABILITY NEIGHBOR body approximating verify
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CYTOPLASMIC EFFECT OF Xenopus laevis ON NUCLEAR FUNCTION OF ITS ALBINO MUTANT
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作者 于豪建 史长平 《Chinese Science Bulletin》 SCIE EI CAS 1986年第10期718-719,共2页
The nucleo-cytoplasmic interactions have been studied by many investigators and it is well established that nucleus and cytoplasm are interdependent and interacting. We have studied the effects of the cytoplasm of wil... The nucleo-cytoplasmic interactions have been studied by many investigators and it is well established that nucleus and cytoplasm are interdependent and interacting. We have studied the effects of the cytoplasm of wild-type Xenopus 展开更多
关键词 LAEVIS CYTOPLASMIC interacting nucleus MUTANT DORSAL nucleo umber DOSAGE abundant
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HOW FAST THE ALGEBRAIC APPROX-IMATION CAN BE?
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作者 洪加威 《Chinese Science Bulletin》 SCIE EI CAS 1986年第3期215-216,共2页
Suppose that we want to compute any number by means of operations like +, -, *, /, and suppose that in one step we can get the exact value of the operation performed. Then the number t(n) of the steps needed to obtain... Suppose that we want to compute any number by means of operations like +, -, *, /, and suppose that in one step we can get the exact value of the operation performed. Then the number t(n) of the steps needed to obtain n approximate digits of the final result is either O(1) or Ω(log n). There is a gap. 展开更多
关键词 compute STEPS SUPPOSE approximate operations exact FAST umber INTEGER letter
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ENUMERATION OF CERTAIN SETS OF PERMUTATIONS
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作者 栾汝书 《Chinese Science Bulletin》 SCIE EI CAS 1984年第12期1583-1589,共7页
Ⅰ. INTRODUCTION Let Zn = {1, 2, …, n}, and Pn be the set of n. permutations π = a1a2…an of Zn.We define the following conditions (ⅰ)—(ⅲ):
关键词 umber SUBSET PERMUTATION 了公 satisfying SUBSTITUTE GENERA 内凡 pointed 全一
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