luminous efficiency造句

relative luminous efficiency

spectral luminous efficiency

Features: high luminous efficiency, long life, light color, and small features.

With the development of LED, the luminous efficiency and luminous intensity has been improved, which is the foundation that it is used on the automobile.

Characteristics: high luminous efficiency, long life, light colour, and gold wand white, through fog and strong. Trigger high-pressure sodium lamp with no external trigger.