Only see a shadow wave swing forever!
唯见，一水波影荡千秋！
Look, that is a swing. Go to the swing. Wave your hand.
看，那是一个秋千。去秋千那。挥动你的手。动你的手。
The fluctuant is different with the influence of period and swing of the sine wave.
正弦型来流使压力系数产生波动，程度受正弦周期、振幅影响；
The fluctuant is different with the influence of period and swing of the sine wave.
正弦型来流使压力系数产生波动，程度受正弦周期、振幅影响；
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