section disconnecting switch

例句：

1. 1.The section disconnecting switch is used to disconnect the circuit when the power supply fails.
   当电源故障时，使用该隔离开关来断开电路。
2. 2. The engineer carefully examined the section disconnecting switch before installing it in the machine.
   工程师在安装机器之前仔细检查了隔离开关。
3. 3.During maintenance, the section disconnecting switch was used to safely disconnect the power supply from the machine.
   维护期间，使用了该隔离开关安全地将电源从机器断开。