electric alarm

 
       
  • 电警报

electric alarm的用法和样例:

例句

  1. Magnetic snap-action electric alarm contacts are used in adverse operating conditions.
    磁性吸合电警报接点用于相反的操作条件。
  2. Electric alarm contacts open and close circuits in response to the position of the pressure gauge pointer.
    电警报接点根据压力表指针的位置开启和关闭电路。
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