题目内容
Fluid steady flow only has the relationship with space coordinates and is independent of ______ .
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There is a function N=f(n1, n2, n3…nk). According to Pi theorem, this function can be transformed into a function with ( ) dimensionless parameters.
The common units of pressure include ( ).
Two fluid flow patterns are______ ; Reynolds number can be used to judge the flow pattern. The expression of Reynolds number in circular pipe is Re=______ , and the corresponding critical value of Re is______ .
设有广义表D=(a,b,D),其深度为( )
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