当液体沿固体表面的流速超过临界速度时，出现滑移，这样能实现减阻；
When the flow rate of the liquid slipping along the solid surface exceeds that of a critical speed, slipping will occur and drag reduction will be realized consequently;
当液体沿固体表面的流速超过临界速度时，出现滑移，这样能实现减阻；
When the flow rate of the liquid slipping along the solid surface exceeds that of a critical speed, slipping will occur and drag reduction will be realized consequently;
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