The sound pressure level at certain distance from the outer shell in flow field is obtained when the vibration velocity of the inner shell is known.
在已知内层壳体振动速度的情况下，计算出流场中距外层壳体一定距离处的声压级。
The sound pressure level at certain distance from the outer shell in flow field is obtained when the vibration velocity of the inner shell is known.
在已知内层壳体振动速度的情况下，计算出流场中距外层壳体一定距离处的声压级。
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