lux gauge

例句：

1. 1. The luminous gauge is used to measure the brightness of light.
   光度计用于测量光的亮度。
2. 2.The luminous gauge was designed to provide accurate readings for lighting engineers.
   光度计被设计为照明工程师提供准确的读数。
3. 3. The luminous gauge was used to measure the intensity of the sun's rays.
   光度计被用来测量太阳射线的强度。