Through the "four look" can distinguish the quality of Ji 'nan luminous word lamp, introduced as follows.

通过“四看”可辨别济南发光字灯的好坏，介绍如下。

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When you are through the square, the big lamp emit red light "spring" word, in the cold night, let you feel a little warm, as if in the atmosphere of the celebration, spring is coming towards you.

当你经过广场时，那大大的的“春”字灯发出的红光，在寒夜中，让你感到一丝温暖，仿佛在这欢庆的气氛中，春天正向你走来。

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The result of the study indicates that when metal halide lamp is used in lighting, it make for the pupil shrink, in other word, it can make people focus on the target.

研究结果表明，当采用富含短波光辐射的金属卤化物灯照明时，会更有利于瞳孔收缩，更有利于聚焦。

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