The DC equation and source drain capacitance formula of the models are given and the application range of three circuit simulation programs is analysed.

在给出多种模型DC方程和源漏电容公式的同时，对三种电路模拟程序的应用范围进行了分析。

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The mechanical transistor, more properly called a nano-electromechanical systems (NEMS) transistor, creates and destroys the connection between source and drain mechanically.

机械晶体管，更确切地可以称之为纳米电子机械系统（NEMS）晶体管，它可以在源极和漏极之间机械地构建或消除连接。

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When the current applied by the gate is high enough, electrons flow through the channel between the source and drain electrodes.

当由栅极施加的电流足够强的时候，电子会在源极和栅极之间进行流动。

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Whereas the channel is like a pipe between the source and the drain it simply lets electrons flow through when the transistor is on the island is more like a gap between two turnstiles.

ECONOMIST: The transistor��s heir

The cooperative and its members know this is a step forward in rebuilding and conserving Rio's environment, but for many, this also means their only source of income has gone down the drain.

CNN: Landfill's closure changing lives in Rio