观看免费视频 Light Bulb Stock Video Two in High Definition

(6.64 MB) 添加日期14 May 2016 播放148次 灯光 科学 Tutorial How it works Macro
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Light Bulb Stock Video Two in High Definition

动画说明：

A different light bulb stock video filmed again in high definition. The filament gives off a red and yellow glow as it turns off and on in this light bulb stock video.

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