放射率 meaning in English

emission rate
emissive power
emissivity
emittance
specific emission

A lumen is a measure of the rate of emission of light energy .
流明是光能放射率的量度单位。
Dose - rate monitor
放射率探测器
Measurement method of nox emission rate for outdoor type instantaneous gas water heaters for domestic use
家用户外型瞬时燃气热水器的nox放射率的测量方法
Calibration and use of germanium spectrometers for the measurement of gammma - ray emission rates of radionuclides
放射性核素的射线放射率测量用锗能谱仪的校正和使用