It is inferred from the thermometry of geyserite and adarce inclusions that underground temperatures for the hot spring system in Tengchong are .

云南腾冲是中外著热区，区内火山岩浆热活动强烈，水热显示形多样，有温泉、热泉、沸泉、水热蚀变岩石、泉（硅、、和硫）等。

The thermometry principle and application of infrared thermometer are analyzed,and the comparison of the performance between pyrophotometer and infrared thermometer is made.

分析了红外测温仪测温原理和应用,比较了光学高温计和红外测温仪性能。