| 1. | An atom contains small particles carrying two kinds of electricity .
原子含有带有两种电的微粒。 |
| 2. | The light beam is scattered by small particles in the moving fluid .
光束被流动流体中的微粒所散射。 |
| 3. | The fluidity of such beds is near to that of the smallest particles .
该床层的流度将接近于最小颗粒的流度。 |
| 4. | Smaller particles were more active, but persisted for a shorter period of time .
较小的颗粒更为活泼，但持续时间较短。 |
| 5. | Every substance , no matter what it is , is composed of very small particles called molecules ..
不论它是什么，都是由一些称为分子的很小的粒子构成的。 |
| 6. | A possible explanation may be that in some particle size determinations the small particles were lost .
一种可能的解释是：在有些粒度测定中把小的粒子漏掉了。 |
| 7. | Damage by impingement is not limited to the large rocks but may also result from transport of smaller particles .
撞击的危害不仅限于大石块，细小颗粒的输移也会引起危害。 |
| 8. | The pressure force on small particles fluctuates from moment to moment in magnitude and direction .
在小的粒子上的压力，从一个时刻到另一个时刻，在大小和方向上都有起伏。 |
| 9. | The falling speed of cloud droplets is small and falling cloud droplets are not very effective in scavenging smaller particles .
云滴下落速度不大，下降的云滴对清除较小粒子并不十分有效。 |
| 10. | Substances consist of small particles called molecules
物质是由叫做分子的微粒组成的。 |
