该文对李强就马上漏刻所提出的三种推测进行分析,认为它们的成立均存在困难。因而提出了第四种推测:马上漏刻是一组安装在一块木板上的秤漏。由于马的运动有时可能比较剧烈,这组秤漏难以保持稳定,于是又提出第五种推测:水银从上面的一只玉壶经过一条长而曲折的管道流注到下面的玉壶里。当水银改成弹子时 ...
薄树人
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[Application of optical genome mapping technology in the genetic diagnosis of a family with a cryptic complex chromosomal balanced translocations]. [PDF]
Liu Y, Fan R, Ji T, Xu X, Hui L, Ma X.
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[Report of 24 cases of primary ciliary dyskinesia in children]. [PDF]
Feng XQ, Zhong LL, Peng L, Xu L, Zhou P.
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Yao ZZ, Yu AZ, Feng X.
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Wang X +5 more
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Liu Y, Zhang Y, Cai D, Ren J.
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Li B, Zhang Q, Sun Y.
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本发明揭示了一种用于检测器件封装水氧渗透指标的方法及其检测装置。首先制备一镀有活泼金属层的石英晶振片;再将石英晶振片在隔绝空气的情况下转移到测试盒之中并用器件封装相同的封装结构及方法密封,最后将测试盒与晶体振荡器、晶控仪、电源相连构成石英微天平,并接通电源,通过晶控仪感测石英晶振片的压电效应及质量负荷效应,实时向微处理器输出,计算得到金属膜吸收入渗的水氧后增加的质量,进而计算得到单位时间内水氧渗透速率与已渗入的水氧总量。本发明的检测方法和检测装置可用于对水氧敏感器件的封装进行水氧渗透速率的实时在线检测 ...
苏文明, 崔铮, 张东煜
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