[计] 线路转接

line switching的用法和样例：

例句

NOTE 1 The different positions of controls and switching devices are taken into account.把控制器和开关在置于不同位置的因素考虑在内。
The switching reliability and long service life are guaranteed by either a silver plated or optional gold plated contact.镀银的或镀金的接点保证了开关的可靠性和使用寿命。

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