illuminance的例句（illuminance在句子中的用法）

• Over a surface , Illuminance averaged over the specified surface. 指定表面上照度的平均值.
• 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.
• 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.