Terminal checking the circuit and control dial protecting setting is normal or not.

定期检查电路及控制仪表的各种保护设置功能是否正常。

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Electrostatic shielding is provided by surrounding the signal path with a conductor connected to a low impedance point in the circuit, preferably the lo input terminal of the measuring device.

利用连接到电路中一个低阻点的导体，将信号通路包裹起来，即实现了静电屏蔽，该低阻点最好是测量设备的LO输入端子。

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Partial Pressure Connection: the varistor of the two fixed end of the bipolar power supply, respectively connected by a sliding side and either a fixed terminal connected to the circuit.

分压接法：将变阻器的两个固定端分别与电源的两极相连，由滑动端和任一固定端连接到电路。

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Peterffy had taken the incoming data wire meant for the terminal and spliced it, soldering the split end into a circuit board that his team of programmers and physicists had built from scratch and embedded into the motherboard of an IBM PC.

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