It points out that the effect of water is equivalent to an attached distributive mass. Therefore, the frequency with water is lower than that without water.
指出水的效应等价于一个附加的分布质量，因此，水中柱体的振动频率低于无水时柱体的振动频率。
It points out that the effect of water is equivalent to an attached distributive mass. Therefore, the frequency with water is lower than that without water.
指出水的效应等价于一个附加的分布质量，因此，水中柱体的振动频率低于无水时柱体的振动频率。
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