bare thermocouple

例句：

1. 1.The bared thermocouple was used to measure the temperature of the liquid metal.
   裸露的热电偶被用来测量液态金属的温度。
2. 2. The bared thermocouple was used to detect the presence of a gas in the air.
   裸露的热电偶被用来检测空气中的气体存在。
3. 3.The bared thermocouple was used to monitor the temperature changes in the furnace.
   裸露的热电偶被用来监测炉内温度的变化。