物理吧 关注:1,258,559贴子:5,260,308
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Sound problem

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Sound is transmitted through the air, the sound is produced by the vibration of air and you


1楼2015-01-11 00:25回复
    so what?You thought you said something easy to understand in english could make you look smart?


    IP属地:江苏来自Android客户端3楼2015-01-11 00:53
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      这是秀英语的。。。。


      来自Android客户端5楼2015-01-11 01:09
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        u didnt say ur problem


        IP属地:湖北来自Android客户端6楼2015-01-11 01:11
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          fdhwhqhqhwhwhevrg
          看不懂你想说什么


          IP属地:湖南来自Android客户端10楼2015-01-11 01:52
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            wtf?


            IP属地:辽宁来自Android客户端11楼2015-01-11 02:02
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