三角面-三角形相交检测
Triangle-triangle intersection test
三角形三面角反射器
triangular trihedral corner reflector
球面三角坐标
spherical triangular coordinates
三角形三面反射器
triangular trihedral refelctor
同底三角形面积比
triangle area ratio of the same hemline
四边形面积坐标
quadrilateral area coordinate
quadrilateral area coordinates
quadrilateral area coordinate method
quadrilateral area coordinate (QAC) method
不规则球面三角形
scalene spherical triangle
等角三角形命题
equiangular triangleproposition
等腰球面三角形
isosceles spherical triangle
等腰直角三角形波导
isosceles-right triangular waveguide