片语
regular triangle formation正三角形配列
smallest regular triangle最小正三角形
regular spherical triangle正球面三角形
equilateral triangle[数] 等边三角形
regular triangle array正三角震动阵列
regular triangle coordinate method三角坐标法
regular triangle net规则三角形网
regular triangle aperture正三边形光阑
morley regular triangle莫利正三角形
regular triangle coordinate三角坐标