Illuminance of illuminating radiation is always measured in photometric units.照明辐射的照度通常是以光度为单位.It refers to the specified average illuminance value on the lighted surface.规定的被照明表面上的照度平均值.Over a surface , Illuminance aver...

illuminance的音标：illuminance的英式发音音标为：[ɪ'lu:mɪnəns]illuminance的美式发音音标为：[ɪ'lumənəns]...

n.照明，启发...