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The effects of dark-broken by UV-B,UV-A,and blue light on fertility of PGMR Nongken 58s
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作者 YUE Bing LI Hesheng FENG Shengqiu Agro Dept.Huazhong Agri Univ,Wuhan 430070,China 《Chinese Rice Research Newsletter》 1998年第2期6-7,共2页
PGMR ( Photoperiod sensitive Genic Male-sterile Rice) Nongken 58s was discovered in1973 by SHI Mingsong, with the characters ofpollen sterile under long daylength(LD) condi-tion but fertile under short daylength (SD)c... PGMR ( Photoperiod sensitive Genic Male-sterile Rice) Nongken 58s was discovered in1973 by SHI Mingsong, with the characters ofpollen sterile under long daylength(LD) condi-tion but fertile under short daylength (SD)condition during its fertility change stage. LI 展开更多
关键词 UV blue The effects of dark-broken by UV-B UV-A and blue light on fertility of PGMR Nongken 58s
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利用OTDR准确查找光缆线路障碍点 被引量:6
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作者 陈以炳 《电信工程技术与标准化》 2008年第5期72-74,共3页
本文重点讲述光缆故障的产生、判断、OTDR(光时域反射仪)的设置、测试及怎样最快查找光缆故障点。
关键词 光时域反射仪 明断 暗断
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