仪器携带和使用方便，工作可靠，是红外天文选址和大气水蒸气含量监示的有用工具。
The instrument is easy to use and handle, and useful in infrared astronomical site-selection. And it can also be used for monitoring of...
云是由大气中的水蒸气凝结成的。
A cloud is a condensation of water vapour in the atmosphere.
相对湿度恒定的假设是重要的，因为大气中的水蒸气是红外波长辐射的另一种有效吸收剂。
The assumption of constant relative humidity is important, because water vapor in the atmosphere is another efficient absorber of radiation at infrared wavelength.
因为温暖的空气比冷空气能容纳更多的湿气，所以只有当大气中的水蒸气量随着温度的升高而增加时，相对湿度才会保持不变。
Because warm air can hold more moisture than cool air, the relative humidity will be constant only if the amount of water vapor in the atmosphere increases as the temperature rises.
例如，温度的升高会增加大气中的水分含量，这又会导致进一步的变暖，因为水蒸气是一种温室气体。
An increase in temperature, for example, can boost the moisture content of the atmosphere, which then causes further warming because water vapor is a greenhouse gas.
就在两周前，天文学家使用哈勃太空望远镜，在一颗外星行星的大气中确定了水蒸气的存在，尽管该行星离我们有大约150光年。
Just a fortnight ago, astronomers using the Hubble space telescope identified water vapour in the atmosphere of an exoplanet, albeit a gaseous exoplanet some 150 light years away.
为了保护核心，阻止更大的问题，专家们必须放出一些水蒸气至大气中，这就意味着随之放出一些有辐射性的微粒。
To protect the core, and prevent a bigger problem, authorities had to vent some of that steam into the atmosphere, which means venting some of the radioactive particles along with them.
排在水蒸气之后，二氧化碳是第二大重要的温室气体，它阻止我们的大气散热，并通过温室效应增加全球温度。
Carbon dioxide is the second most important greenhouse gas (after water vapour), trapping heat in our atmosphere and increasing global temperatures via the greenhouse effect.
水蒸气、二氧化碳和大气中的一些其它气体将来自太阳的热量收集起来，温暖了地球。
Water vapor, carbon dioxide and other gases in the atmosphere trap heat from the sun, warming Earth.
当你使大气温度升高的时候，也提高了水蒸气的水平，所以最好把这个过程搞明白，差一星半点是不行的。
And when you drive up the temperature of the atmosphere, you drive up the water vapor, so you better have this right. Having it pretty close isn't enough.
通过释放各种污染物以及水蒸气至机库中，该创意旨在测试这些物质对大气窗口的影响。
The idea is to test the effects on the atmospheric window of various pollutants, and also of water vapour, by releasing them into the building.
地球大气含有大约78%的氮气、21%的氧气和痕量的水蒸气、氩气和二氧化碳等其它气体。
The atmosphere is roughly 78 percent nitrogen, 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.
随着煤的燃烧，二氧化硅的颗粒跟随水蒸气被释放到大气中，然后被人体吸入。
As the coal burns, particles of silica are released with the vapor and inhaled.
这张地图展示了2010年八月期间地球大气层中的水蒸气分布情况。
This map shows the distribution of water vapor in Earth's atmosphere during August 2010.
这里不会有任何水蒸气，在利用圆柱活塞，外加一个大气压的压力的情况下。
This is not going to be any water vapor at one bar pressure on that cylinder.
反应堆彻底熔化的危险性看起来很低，可是放射性物质已经被探测到随发电站出来的水蒸气一同泄露到大气中。
While the danger of a total meltdown at the reactor appears to be very low, radioactive materials have been detected leaking into the atmosphere along with steam from the plant.
在金星上，热的水蒸气上升到大气层中，在大气层中水分子在阳光的作用下分解。
On Venus, hot water vapor rose high into the atmosphere where water molecules were split apart by the action of sunlight.
大气层中水蒸气几乎都来源于蒸发作用、蒸腾作用、升华作用再加上火山释放的水蒸气。
Together, evaporation, transpiration, and sublimation, plus volcanic emissions, account for almost all the water vapor in the atmosphere.
虽然海洋蒸发的水蒸气是水循环中地球表面到大气这一渠道的首要组成部分，植物蒸腾所占的部分也颇为惊人。
While evaporation from the oceans is the primary vehicle for driving the surface-to-atmosphere portion of the hydrologic cycle, transpiration is also significant.
逐渐变得温暖的大气层意味着更多的水蒸气，本身就是一种温室气体的水蒸气使得温室效应更加恶化。
Warmer atmospheric air means more water vapor, which is itself a greenhouse gas, exacerbating the problem.
行星HD 189733b是比木星还大的气态行星。研究已证实，该行星大气层中含有钠、一氧化碳、二氧化碳、水蒸气和甲烷。
Studies of HD 189733b, a hot gas giant that is larger than Jupiter, have confirmed that its atmosphere contains sodium, carbon monoxide, carbon dioxide, water vapour and methane.
最后，大气中储存的水蒸气将再次凝缩为液体。
Eventually, the water stored as vapor in the atmosphere will condense to liquid again.
现在，火星的低温和稀薄的大气意味着水分只能以固体或水蒸气的形式存在-液态水要么凝固要么沸腾。
Today, the planet's low temperature and thin atmosphere means that water can only exist as solid ice or gaseous vapor — liquid water would either freeze or boil.
水蒸气是大气的正常组成部分。
盐颗粒增加了，小水滴的水量也就增加了，这并不能改变云的总量(其总量受大气层中水蒸气数量多少的影响)，但是更多更小的水滴的确能增强云层的反射度。
That does not change the total amount of cloud (which is controlled by the amount of water vapour in the atmosphere). But having more, smaller droplets does increase a cloud's reflectivity.
然而，当行星接近现在的大小的时候，它的重力强到了足以保持其周围的气体和水蒸气来形成大气层。
As the planet approached its current size, however, its gravitation became strong enough to hold gases and water vapor around it as an atmosphere.
然而，当行星接近现在的大小的时候，它的重力强到了足以保持其周围的气体和水蒸气来形成大气层。
As the planet approached its current size, however, its gravitation became strong enough to hold gases and water vapor around it as an atmosphere.
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