回复：要判别噪声源--- I only can say the fun itself make big noise , so I

来源: haveniceday-2 于 2013-06-02 17:48:28 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (538 bytes)
回答: 要判别噪声源是机械或是风声？ 由 事后诸葛 于 2013-06-02 13:16:19

to replace it first, but i can't say other about it is 机械声 or风声 which cause these noise.

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