机动道岔

mechanical switch的用法和样例：

例句

If someone gets drunk and pulls the wrong switch, he can cause a collision.喝醉了酒扳错道岔，就会造成火车相撞的重大事故。
Engineering equipment and parts in manufacturing operations, the company's dominant position in the switch market, is one of the world's largest manufacturers of turnouts.在工程设备和零部件制造业务方面，公司在道岔市场处于主导地位，是全球产量最大的道岔制造商。

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