momentum
英 [mə'mentəm]
美[mo'mɛntəm]
- n. 势头；[物] 动量；动力；冲力
英英释意
- 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"