The method can be extended to axisymmetric and three-dimensional turbulent boundary layers if the pressuregradienteffect is considered.
如果考虑压力梯度的影响，还可以将该方法推广到轴对称和三维湍流边界层中去。
2
The birefringent effect of K9 glass has been studied under low pressure. The index of birefringence and its gradient have been measured.
研究K9玻璃在低压下的双折射效应，测量它的双折射率及其梯度。
3
It is indicated that the main factors affecting low permeability gas reservoir are stress action, start-up pressuregradient, permeability, slippage effect, and water blocking effect etc.