| 1. | A falling object gains momentum as it falls .
物体下落增进动量。 |
| 2. | Momentum and energy have been united .
动量和能量统一了起来。 |
| 3. | The total momentum at this instant is thus mv .
因此，在该时刻的总动量为mv。 |
| 4. | If the impulse is zero, there is no change in momentum .
如果冲量为零，则动量不变。 |
| 5. | Each of the individual momenta may change in time .
每个单独的动量可能随时间而变化。 |
| 6. | The gage deflection is due to the momentum transfer .
压力计的偏转是由于动量交换的原因。 |
| 7. | Momentum conservation is a consequence of newton's laws .
动量守恒是牛顿定律的一个推论。 |
| 8. | Momentum may be thought of as a quantitative expression of inertia .
动量可以被理解为惯性的定量表示。 |
| 9. | We have found it necessary to represent momentum as an operator .
我们已经发现需要用一个算符来表示动量。 |
| 10. | What states have a definite momentum in the x-direction, say ?
譬如说，什么样的态在X方向具有确定的动量值？ |
