照度测量 meaning in Chinese

illumination photometry

Front projection equipment - method for measuring screen illumination
正面放映设备.银幕照度测量方法
Photometric and colorimetric measurement , such as luminous flux measurement of all kinds of lamps , luminous density measurement in classrooms and color measure of color tv etc . are commonly used in daily manufacturing . at present , special photometric and colorimetric instruments are available
在日常的生产中，光度和色度的测量是很常见的，如各种灯的光通量测量，教室内照度测量，彩色电视机的颜色测量等等。