| 1. | Polyethylene is an excellent barrier to water vapor .
聚乙烯保水蒸汽的性能良好。
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| 2. | The vapor made his eyes prick .
水蒸气使他眼睛刺痛。
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| 3. | At point e, the substance is wholly in the vapor phase .
到e点时，物质全部变为气相。
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| 4. | Liquid and vapor phases cannot coexist in equilibrium .
液相和气相不能在平衡中共存。
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| 5. | Water vapor is a normal constituent of the atmosphere .
水蒸气是大气的正常组成部分。
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| 6. | The light beam passes through the container holding the vapor .
光束通过盛蒸汽的容器。
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| 7. | This new machine sometimes transpires a lot of hot vapor .
这部机器有时排出大量的热气。
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| 8. | 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。
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| 9. | The diary would be reduced to ashes and himself to vapor .
日记会化为灰烬，他自己会化为乌有。
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| 10. | The condensed vapor boron content was reduced to 2～3 mg/1 .
冷凝蒸汽中硼含量可降到2-3毫克升。
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