Side effect : tracheitis, softy ears , visual fatigue . Action resistance.

气管炎 、 耳根软 、 视疲劳、行为受阻等.

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No strobe, pure DC operation, eliminating the traditional visual fatigue caused by strobe lights.

无频闪, 纯直流工作, 消除了传统路灯频闪引起的视觉疲劳.

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But ceriporiopsis through high paper and periodicals, strong black and white contrast it readers visual fatigue.

但是用白量功矮的纸张印书刊, 暗白反不差刚烈,容难造不败读者触觉怠倦.

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