一、材质选择

One, material selection

市场照明材质的差别很大，不同材质的灯价格也是大相径庭。工程照明选择好材质主要作用在散热方面。

The market lighting material is very different, and the price of the lamp with different materials is quite different. Engineering lighting choice of good material is mainly in terms of heat dissipation.

二、重量选择

Two. Weight selection

工程上选灯很多人比较在乎灯的重量，这个不是决定性的作用，不能完全根据重量进行判定。轻的大部分是全塑料、玻璃外壳和FR4板，好点的是铝合金散热器，如果是电源灌胶的话就会更重。

Many people choose lights on the project more care about the weight of the lamp, this is not a decisive role, can not be judged entirely according to the weight. Most of the light is all plastic, glass shell and FR4 board, the better is aluminum radiator, if it is power supply glue, it will be heavier.

三、参数判定

Three, parameter determination

外在的参数不是衡量工程照明好坏的重要标准，还是要根据功率参数、散热效果和实测老化等进行判定。

Extrinsic parameters are not important criteria for measuring the quality of engineering lighting, or should be judged according to power parameters, heat dissipation effect and aging.