| 1. | Polyethylene is an excellent barrier to water vapor .
聚乙烯保水蒸汽的性能良好。 |
| 2. | Water vapor is a normal constituent of the atmosphere .
水蒸气是大气的正常组成部分。 |
| 3. | Warm air can contain more water vapor than cold air .
热空气要较冷空气容纳更多的水蒸汽。 |
| 4. | In the infrared, the absorption is due mainly to water vapor .
在红外线区，吸收主要是因为水气的缘故。 |
| 5. | Most of atmosphere's water vapor comes from evaporation of sea water .
大气中的水汽大部分来自海水蒸发。 |
| 6. | Air is the agent that transports water vapor from one region to another .
空气是把水汽从一地送到另一地的媒介。 |
| 7. | " fog , mist " haze are all water vapor at ground level and above .
“fog，mist，haze”均为地面及地面以上的水蒸气。 |
| 8. | Studies show that water vapor quickly permeates plastic packaging material .
研究证明水蒸汽能迅速渗入塑料封装材料。 |
| 9. | The capacity of air to hold water vapor depends on its temperature and pressure .
空气保持水蒸气的能力取决于温度和压力。 |
| 10. | This, in turn, reduced the transport of heat and water vapor to and from the plant .
这样反过来又减低了热和水汽从植物中的进出量。 |
