momentum
英 [m?'ment?m]
美[mo'm?nt?m]
- n. 勢頭；[物] 動(dòng)量；動(dòng)力；沖力
英英釋意
- 1. an impelling force or strength;
- "the car's momentum carried it off the road"
- 2. the product of a body's mass and its velocity;
- "the momentum of the particles was deduced from meteoritic velocities"