Within a switching system, a connection or circuit between inlets and outlets of the same or different switching networks.

在交换系统中，同一或不同交换网络的引入线和引出线之间的连接部分或电路。

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Ir measurements often involve multiple conductors, so a switching system is often required to switch the picoammeter and the source to all the conductors in the test circuit.

由于IR测量往往涉及到多芯导线，所以通常需要一套切换系统来将皮安计和源切换至测试电路中的所有导线。

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Subscriber line interface circuit is an important part of digital program-controlled switching system.

模拟用户线接口电路是数字程控交换系统的重要组成部分。

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