| 1. | Sound travels through the medium of air . 声音通过空气介质传播。 |
| 2. | The surface material consists of drift . 表层介质是冰碛组成的。 |
| 3. | The randomness is attributed to the porous medium . 随机性起因于多孔介质。 |
| 4. | Perforated plates correspond to heterogeneous media . 多孔板相当于均匀介质。 |
| 5. | In a uniform medium light travels in straight lines . 在均匀介质中光沿直线传播。 |
| 6. | Water is the most harmful agent . 水是一种最有害的介质。 |
| 7. | Such material can confine water in an artesian aquifer . 这样的介质能把水控制在承压含水层中。 |
| 8. | Only dielectric stratified media will be treated in this section . 这一节将只讨论介质分层媒质。 |
| 9. | The same sort of problem may exist with some neurotransmitters . 对于某些神经介质也存在这种问题。 |
| 10. | Colloidal particles are bombarded by molecules of the dispersion medium . 胶粒会受到分散介质分子的碰撞。 |