plunger type line switch

例句：

1. 1. The plunger type switch is used to control the flow of water in the plumbing system.
   插管式开关用于控制管道系统中水流的流动。
2. 2.The plunger type switch is a simple and reliable device that can be used to turn off power when needed.
   插管式开关是一种简单而可靠的设备，可以在需要时关闭电源。
3. 3. The plunger type switch is commonly used in industrial settings where safety is a top priority.
   插管式开关在工业环境中被广泛使用，因为安全是首要考虑的因素。