gas electric type indicator

例句：

1. 1. The gas electric type indicator is used to measure the amount of gas in the air.
   气体电型指示器用于测量空气中的气体量。
2. 2. The gas electric type indicator is an important tool for monitoring the safety of industrial processes.
   气体电型指示器是监测工业过程安全的重要工具。
3. 3.The gas electric type indicator can indicate when the engine needs to be refueled.
   气体电型指示器可以指示发动机何时需要加燃料。