Adopting PLC special function block technology, it is easy to realize to adjust up step or down step of electronic beam current.
利用PLC的特殊功能模块技术，较好地实现了电子束流的上升梯度和下降梯度的方便调节。
Meanwhile, carry on the animal behavior test, including Open Field behavior, Hole-board test, Tail Flick Latency (TFL) test and Step-down test to discover the gene function on the whole animal level.
同时进行旷场行为测试、洞板试验、甩尾试验、步下法试验等动物行为学实验，旨在研究这些基因在整体动物水平上的功能表现。
The ambiguity function of step frequency coded signal is discussed. An up-down step frequency coded signal waveform is designed with its processing method.
本文讨论了步进频率编码信号的模糊函数，提出了一种正负步进频率编码信号及其处理方法。
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