误差的一个来源是折射，即光束通过不同温度和压力的空气层时发生的弯曲现象。
One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure.
我想再一次追问环境的问题，即空气这个话题。
ROBINSON I want to push you one more time on the environment- air.
加入萤石粉(即氟化钙)可以使熔融态的金属更具有流动性，并在钛冷却过程中将钛与空气隔绝。
Adding ground fluorite powder makes the molten metals more fluid and protects the titanium from air as it cools.
香柠檬油同时也有助于香味的扩散，即香味弥漫并悬浮在空气中的方式。
It also helps diffusion, the way a scent lifts and hangs in the air.
清晨时分的晓雾和挡风玻璃上的晨露即源于此——空气当中的水分冷凝结成的水珠。
So the morning fog, and the dew on your windshield, comes from air that's cooled enough that it can't hang onto its water.
环境保护主义者关于人口问题的归责长期唇枪舌剑争论不休：人口总量即与之对应的供给人口需要的水、食物、矿产和清洁的空气总量等等。
Environmentalists are arguing in circles about who or what is to blame: the total number of people; or the amount of water, food, mineral ores or clean air each demands.
雷暴通常就发生在两者交界处，即两个温度或湿度不同空气气团相撞的地方（锋面，theweather front）。
Thunderstorms often occur along the boundary—the weather front—where two air masses with different temperatures and/or humidities collide.
美国环保局的安全环境门槛是可吸入颗粒为PM 2.5，即每立方米空气中颗粒含量为15(译者：应该为25)微克。
The EPA's threshold for safe exposure to PM 2.5 particles, as they're called, is 15 micrograms per cubic meter of air.
空气质量用年平均细颗粒物的浓度表示(PM10至PM 2.5，即粒径小于等于10或2.5微米的细颗粒)。
Air quality is represented by annual mean concentration of fine particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 microns).
云层形成在圆柱形旋转气流循环的上升段，即空气抬升阶段；而沿气流循环的下降段(空气下沉)的天空依然晴朗。
Clouds form along the upward cycle in the cylinders, where air is rising, and skies remain clear along the downward cycle, where air is falling.
和其他云一样，它是当空气达到凝结点，即空气团的温度冷却到使其中的水蒸气凝结成液态水滴的温度时形成的。
Like all clouds, it forms when the air reaches its dew point, which is the temperature to which an air mass must be cooled for the water vapor in it to condense into liquid droplets.
但是气候变化还有另外一个影响，即它可以改变空气循环的模式。
But climate change has another effect: It changes patterns of global air circulation.
大气层里二氧化碳含量的测量单位是ppm，即一百万体积的空气中所含二氧化碳的体积数。
The level of carbon dioxide in the atmosphere is measured in parts per million (PPM).
监测数字显示，周日，首都北京大部分地区的空气质量指数均达到500，即污染程度的最高上限，北京的雾霾天气已持续三天。
Monitoring data showed the Air Quality Index in most parts of the capital reached 500, the maximum pollution level, on Sunday, the third consecutive day of severe smog.
喷泉石景即石景与水景的组合，闪现艺术空气。
Fountain, stone or stone with the combination of waterscape, flash art atmosphere.
在对空压机要求不高的情况下，一般采用调制式控制，即通过控制压缩机吸入空气的量来保证系统所需要的空气压力。
In the air compressor demand is not high, the general use of the modulation control, that is, through the control of air inhaled compressor is to ensure that the system need air pressure.
一种气压的分布情况，其中给定体积内的空气质量，即空气的密度，不仅仅是气压的函数。
A distribution of air pressure and the mass of a given volume of air such that the air density is not a function only of atmospheric pressure.
在空气中的湿度含量达100%以上时，密环菌得到充分的水分，和空气中的氧元素磨擦而发光，干燥后即消失。
When the humidity in the air content of more than 100%, the sealing ring bacteria get enough water, and the oxygen in the air friction and luminescence, dry after the disappearance.
全球气候变暖的定义是崛起的平均气温的地球近地表层的空气，以及海洋，并延伸到预计的延续，即上升。
Global warming is defined as the rise of the average temperature of the Earth's near-surface layer of air as well as the oceans, and extends to the projected continuation of that rise.
他将液汞在空气中加热，然后它变成了一种红色粉末，即通常所说的红色水银烧渣。
He heated liquid mercury in air, and it turned into a red powder, known as the red calx of mercury.
你们要经常这样练习，在任何姿势中，随时抓住那个感觉(即觉知动作)，这样你的正念就会增长，而不知与妄念就会减少，就像杯子里的水取代了空气一样。
Not-knowing goes out of our minds. Do it often. Catch the feeling often, in all postures. Sati will increase; and delusion, not-knowing will decrease just as the water replaces air in the glass.
水以水汽，即气态的水，存在于空气里。
The water is in the air as water vapor, water in the form of a gas.
这种食物一接触到空气即迅速变坏。
气压的-种分布情况，给定体积内空气质量，即空气的密度，仅仅是气压的函数。
A distribution of air pressure and the mass of a given volume of air such that the air density is a function of only atmospheric pressure.
蜡烛燃烧时，用真空泵吸走周围的空气，令黑色的炭物质——即燃烧产物——与其余空气分开。
While the candle burns, a suction pump pulls in the surrounding air to a simple mechanism that separates the carbon black - a byproduct of combustion - from the rest of the air.
此种外加热型吸附式干燥机不需要消耗压缩空气。即再生气消耗量为0%。
The external heating type adsorption dryer without consumption of compressed air. Namely again angry consumption is 0%.
然而，一旦周围空气变得比较潮湿，电子则会较紧密地待在原地，即原来的原子附近。
However, when the air is humid, electrons stay closer to their original positions near the atom.
然而，一旦周围空气变得比较潮湿，电子则会较紧密地待在原地，即原来的原子附近。
However, when the air is humid, electrons stay closer to their original positions near the atom.
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