前尾 meaning in English

maeo

Then a laplace equation can be deduced and through computation , the blade profile coordinates and geometry of the cascade result from an analytical solution . next , an optimization method , taking the geometry parameters of the unclosed profile as its objective functions , is used to obtain an optimized blade profile . and last , the optimized profile is refined with round arcs added in the leading and trailing edges
本文采用的势、流函数解析法法中，将无旋方程用新的类无旋方程替代，这样在计算域上得出速度场的解析关系式，计算得出初始叶型；然后以此初始叶型的几何参数，例如前尾缘的封闭程度和叶型弯角等为目标函数，通过优化程序对初始速度进行自动调节直到目标函数值最小为止。