下列说法正确的是 A.只要质点的位移与时间的关系遵从正弦函数规律那么它的运动就是简谐运动b.�影机镜头镀膜增透是利用了光的衍射特性c Template




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tomski下列说法正确的是 a.只要质点的位移与时间的关系遵从正弦函数规律那么它的运动就是简谐运动b.�影机镜头镀膜增透是利用了光的衍射特性c coloring