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Video camera
A video camera is an optical instrument that captures videos, as opposed to a movie camera, which records images on film. Video cameras were initially developed for the television industry but have since become widely used for a variety of other... Wikipedia
摄像机,摄像机种类繁多,它的品牌摄像机,它的基本原理都是一样的:把光学图像信号转变为电信号,以便于存储或者传输。当我们拍摄一个物体时,此物体上反射的光被 ...
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