您要查找的是不是：
- A novel device for measuring pulse flame temperature and water vapor concentration 脉冲火焰温度及水蒸气浓度测量装置研究
- water vapor concentration 水汽浓度
- Supersaturation of Water Vapor in Clouds. 云中水汽的过报和。
- Water vapor on the window pane blocks my sight. 窗子上的蒸汽挡住了我的视线。
- Clouds are formations of condensed water vapor. 云是水汽凝聚而成。
- Water vapor is water in the form of a gas. 水蒸气是气态的水。
- Self-contained breathing apparatus in high vapor concentration. 呼吸防护:在高浓度中使用氧气面罩。
- Water vapor is the gas state of liquid water. 水汽是液体水的气态形式。
- Water vapor is a normal constituent of the atmosphere. 水蒸气是大气的正常组成部分。
- Polyethylene is an excellent barrier to water vapor. 聚乙烯保水蒸汽的性能良好。
- 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。
- Ventilation: positive downdraft exhaust ventilation should be provided to maintain vapor concentration below TLV. 通风：为了使气体聚集程度维持在阀极限值之下，应提供通畅的向下棋流排气通风设施。
- Being ext remely light , water vapor often riseshigh in the sky. 由于水蒸气较轻,所以常常升入高空。
- 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。
- Rain occurs when a mass of warm air laden with water vapor rises. 当满含水汽的暖空气团上升时，就会下雨。
- Water vapor accounts for about 4% by volume in moist areas. 在气候潮湿地区，水汽按体积占（空气体积）4%25左右。
- Water vapor condensed on and clouding the appearance of a surface. 雾:凝结或悬浮在物体表面的水雾。
- Water vapor in the rising warm air condenses to liquid water. 上升的暖空气中的水蒸气冷凝成液体的水。
- Engineering contacts: If general ventilation is insufficient to maintain vapor concentration below Established exposure limits, use local exhaust ventilation. 如果在不够通风的条件下处理,需要采用一定的通风设备进行处理。
- Transpiration The loss of water vapor form the surface of a plant. 蒸腾作用：植物表面损失气态水分子的过程。
