light intensity meter

基本解释

Light Meter: An electrical exposure meter for measuring light intensity.
测光表：用来测量光强度的一种电子曝光表。
fanpaiwang.blog.sohu.com
Measure light intensity on the water surface and at the bottom by a light probe connected to light meter.
用连接在光照度计上的光探头测量水面及水底的光照度。
Based on the principle of light extinction and using the photoelectric technology, a new type of smoke meter was designed to measure the smoke intensity of motorcycle exhaust.
根据消光式烟度计的工作原理，设计了一种基于光电检测技术的新型消光式烟度计。