并且证明悬料区的总压降可以近似等于立管的压降。
The total pressure drop in hung-up regime is approximately equal to that in the standpipe.
排水立管的上部和下部都存在正压和负压。
Positive and negative pressure existed in the upper and lower drainage pipes.
排水立管的上部和下部都存在正压和负压。
Positive and negative pressure existed in the upper and lower drainage pipes.
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