减压阀有直动型和先导型两种。
上行先导与下行先导连接，于是产生了一次回击，随后又是五次以上的直窜先导型回击。
This upward leader connects with the downward leader and a return stroke occurs. Five more dart leader-return strokes follow.
到目前为止，中心已成功地孵化企业20多家，其中有些企业已成为当地的科技先导型企业。
So far, it has succeeded in incubating over 20 enterprises, some of which have become pioneering technological enterprises in local places.
介绍了用于煤矿井下智能型真空磁力起动器中的先导电路看门狗的功能及工作原理和一种先导看门狗电路。
Function and working principle of a gate watching dog of a guide circuit and a kind of a guide gate watching dog are presented for an intelligent vacuum circuit breaker in coal mine.
以蝙蝠葛碱为先导化合物，采用Q型信息群分法，进行计算机辅助系列设计。
Dauricine was taken as a lead compound and the Q-model information cluster analysis was employed for the computer-aided molecular design.
本文首先导出了该系统频率和振型的分析表达式，并利用计算机辅助设计软件，分别讨论了质块质量及弹簧常数对系统频率的影响。
By using CAD software, the influence of mass and spring constant on system natural frequencies and mode shapes is discussed respectively.
本文首先导出了该系统频率和振型的分析表达式，并利用计算机辅助设计软件，分别讨论了质块质量及弹簧常数对系统频率的影响。
By using CAD software, the influence of mass and spring constant on system natural frequencies and mode shapes is discussed respectively.
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