三角隶属函数
triangular membership function
梯形隶属函数
trapezium subordinate function
等角三角形命题
equiangular triangleproposition
等腰直角三角形波导
isosceles-right triangular waveguide
等腰直角三角形网
right-triangle irregular network
反三角函数
inverse trigonometric function
antitrigonometric function
anti-trigonometric function
inverse circular function
inverse trigonometrical function
arc trigonometric function
antitrigonometrical function
arc-trigonometric function
反三角函数法
antitrigonometric function method
精化九参数三角形薄板单元
refined nine parameter triangular thin plates bend
模糊三角函数
fuzzy triangular member function