一列简谐横波某时刻的波形图如图所示该波以50cms的速度�右传播这列波的�期为 S图中a质点第一次回到平衡位置所需的时间是 S 22 Template


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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )


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tomski一列简谐横波某时刻的波形图如图所示该波以50cms的速度�右传播这列波的�期为 s图中a质点第一次回到平衡位置所需的时间是 s coloring