This same switch will also operate on low oil level, such as a slow oil leak.
其他低油位情况发生，比如慢漏油时，浮控开关也会有动作。
Push button switch fitted on barrel can operate controller by pushing with a finger.
安装于胶管上的开关，用手指即可操作控制器作业。
Switches operate by recording the source MAC address as a frame enters a switch.
交换机的工作方式是帧在进入交换机时记录下MAC源地址。
Switches operate by recording the source MAC address as a frame enters a switch.
交换机的工作方式是帧在进入交换机时记录下MAC源地址。
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