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够承受较大工作压力。5、扎实的光学知识，对led、照明知识有一定的了解，至少掌握一种光学设计软件，如：tracepro,Light tools等，能进行透镜、反光杯等光学系统。6
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r success in measuring the smallest Parts of time, time remains one of the great mysteries of th
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l through the 12 meridians in the ear, so the human body organs and Parts of the occurrenc
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对于led灯，想必大家都已经很了解了吧，50 年前人们已经了解半导体材料可产生光线的基本知识，第一个商用二极管产生于 1960 年。 led是英文 Light emittin
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