emittance
n. 发射率；发射量
例句
The concepts of radiant emittance and of irradiance are complementary.
辐射的发射强度和辐照度是两个互补的概念。
The concepts of radiant emittance and of irradiance are complementary .
Emittance and irradiance are meaningful measurements of flux at a specific surface.
发射强度和辐照强度只有对一定表面上通量的量度才是有意义的。
