... 局部必v local power 局部压力降 local pressure drop 局部辐射效应 local radiation effect ...
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回弯压力降除考虑回弯头的局部阻力外，还包括相连直管段受回弯影响而增加的压力降。
The additional frictional pressure drop for vertical tubes due to its connection with the bend was accounted into the frictional component due to return flow.
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