two-colour temperature
two-colour(radiation) thermometer,比色温度计 two-colour temperature,比色温度 two-colour thermometry,比色测温法 ..
double-path rato thermometer ; path rato thermometer
ratio thermometer ; two-colour thermometer ; colorimetric thermometer ; two-colour temperature
single-path ratio thermometer ; single piston pressure-vacuum gauge ; path ratio thermometer
温度为T的物体,其两个光谱辐射亮度的比值和温度为Tc的黑体的同波长下两个光谱辐射亮度比值相等,则Tc为该物质的比色温度。