发布时间:2025-01-17 21:35:59
墙壁可以传声音。不必取下来,在电视机和墙壁之间加一层软垫就可以了,比如泡沫塑料等等
机械图纸上表示槽钢的线是一条直线加一条虚线怎么在cad或caxa上一下子画出来
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