片语
equilateral triangle waveguide正三角形波导
equilateral U triangle等边三角形
equilateral roof triangle正三角形
einthoven equilateral triangle theory爱氏等边三角形学说
equilateral E triangle等边三角形
non-equilateral triangle[数]
equilateral A triangle等边三角形
equilateral triangle angular capillary角管毛细管
regular triangle[数] 正三角形;等边三角形
equilateral circular triangle[数]