photometric requirement

基本解释

The paper analyses the standards relating to the photometric performance of the headlamp for moped and put forward a standard requirement conformable to the national situation.
分析了与轻便摩托车前照灯配光性能有关的标准，提出一种符合我国国情并适合实际生产的标准要求。
On the base of requirement of national standards, a set of system for measuring photometric and colorimetric characteristics of headlamp and light signaling devices for motor vehicles is developed.
根据国家标准的要求和用户需要，开发出了一套用于测量机动车前照灯和信号灯的光度和颜色参数的测量系统。介绍了系统的工作原理、方法、特点和测试结果。