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- Water vapour in the air changes to waterdrops on the surfaces of these objects. 空气中的水蒸气变成小水滴附着在这些物体表面。
- With approval, airflow may set back to 6 air changes per hour when space is unoccupied. 如经过同意，当实验室无人时，可以将换气量降为6次每小时。
- Based on a contamination emission model, analyses the influences of indoor temperature, mass transfer coefficient and air changes on contamination emission from porous materials. 基于所建的污染物散发模型,分析了室内温度、传质系数、换气次数对多孔材料污染物散发的影响。
- Directly measuring the levels is usually not the best way to do it, explains environmental consultant Christopher VanCantfort, because indoor air changes so frequently. 环境顾问范坎佛解释道，直接测量浓度不是最好的办法，因为房子里的空气经常变化。
- The distant roosters began to crow and the air changed and the dawn was coming. 远处的公鸡开始叫唤，天气也变了，黎明快到了。
- Based on the previous research, theoretically analyses the influence of combinations of air changes and cooling load in an isolation ward and the adjacent buffer room on isolation effects when the temperature difference is considered. 摘要从理论上分析了考虑温差影响下，隔离病房和缓冲室的换气次数与房间冷负荷的匹配情况对两室一缓工况下隔离效果的影响。
- This rugged diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. 这种结实的隔膜将空气变化的损耗减少到最小程度，确保了系统更长的无故障的使用寿命。
- The air in the garden was warm and fragrant. 花园里的空气一片温馨。
- The archers sent their shafts through the air. 弓箭手向空中射出利箭。
- Air change rate measurement for a newly renovated office with VRV system. Tracer gas (SF6) is used along with multipoint gas sampler and analyzer. 透过少量追踪气体（六氟化硫），配合多点气体采样及分析仪器，对使用可变换冷冻能力系统的新装修办公室作出换气量的测量。
- Automobile inner decoration, Air change tube,Switch, Air-condition vent grill, Damping system, Garden tools, Power tools housings, Electronic weigher etc. 汽车内饰件、换气管、开关、空调出风格栅、减震器、园艺工具、电动工具壳体，电子称等。
- According to the simulation,it is the best condition of CRE in clean room when air change rate is 55 per hour,and the conclusion provides a theoretic basis for engineering design. 通过模拟对比,得出在换气次数为55次时,房间的排污效率最好;并为工程设计提供了一定的理论依据。
- The lack of air in the room make everyone sniffle. 屋子里空气缺乏，使得每个人都频频吸气。
- During the intermission, let's go out for some fresh air. 幕间休息时，我们出去呼吸呼吸新鲜空气吧。
- The air held a foretaste of a storm. 天气有要括大风的迹象。
- The air was reeking with the smell of tobacco. 空气中弥漫着烟草的气味。
- A walk in the fresh air will pep me up. 我在空气新鲜的地方散步就感到精神饱满。
- He served one month with the Air Army in Kuwait. 他在科威特的空军里服役1个月。
- Large air and navel forces were set into action. 庞大的空军和海军部队开始行动了。
- His modesty [air of joviality] was all put on. 他的谦逊[愉快的样子]都是装出来的。
