double-path rato thermometer

double-path rato thermometer,双通道比色温度计 double-polarity method for calibrating thermocouple,热电偶双级检定法 ..

 path rato thermometer

单通道比色温度计 path ratio thermometer 双通道比色温度计 path rato thermometer ; path ratio thermometer 参比端温度补偿法 temperature compensating method of reference junction ..