单词tetrahedra
n.: 【几】四面体；【植】四分体形网络: 四面体网格；硅氧四面体
Some Geometric Inequalities on the Bisection Planes of the Dihedral Angles of a Tetrahedra
关于四面体二面角平分面的几何不等式
Extension of Triangular Inequality in Tetrahedra
若干三角形不等式在四面体中的推广