短語詞組短語spherical l triangle 球面三角形spherical tight triangle 球面直角三角形roghtangled spherical triangle 球面直角三角形scalene spherical triangle 不規(guī)則球面三角形quadrantal spherical triangle [航]象限球面三角形astronomical spherical triangle 天文球面三角形side of spherical triangle [數(shù)]球面三角形的邊oblique e spherical triangle 斜角球面三角形 返回 spherical triangle