短语词组短语Momental Valley 纪念谷momental ellipse 惯量椭圆momental vector [力]力矩矢量momental elli 惯量椭圆momental ellipsoid 惯量椭球;惯性椭球面;惯量椭圆体Momental endurability 弯矩承载能力momental efficiency 扭矩效率a momental ellipse 动量椭圆 返回 momental