Wind is a current of air caused by a vacuum caused by hot air rising.
风是由热空气上升产生真空而引起的空气流动。
I felt a current of cool air blowing in my face.
我感到一股凉气吹在脸上。
我感觉到了一阵凉风。
On top of that, the field generated by an alternating current interacts with the ground more strongly than it does with the air.
高空架线的话，由交流电产生的电磁场与地面的感应要比空中的电场交互作用强大得多。
Rich countries account for most of the past emissions that now fill the air, but less than half the world's current emissions.
大气中累积的绝大部分温室气体由发达国家排放，但发达国家目前的排放量还不到世界总量的一半。
Admittedly, there are various factors contributing to the current worldwide air pollution, but it is undeniable that the exhaust from automobiles is categorized as one of the major elements.
诚然，有很多因素导致了现在的全球空气污染问题，但是不能否认的是汽车废气被归为最重要的因素之一。
The current five-year plan, which contains few other numerical targets, envisages a 10% reduction in concentrations of the worst air pollutants and a 20% increase in energy efficiency over the period.
现行的五年计划，其包括的数字目标没有几个，设想这期间最差的空气污染物的浓度减少10％，能源效率增长20％。
It takes into account current temperature, current humidity, and current season of the year in determining the heating or air conditioning setting for the area being monitored.
它考虑当前温度、当前湿度和当前季节，以便为所监视的区域确定供热或空调设置。
The best news: Existing owners of the current Kindle model will get both of these enhancements via an over-the-air software update.
最好的消息：Kindle目前机型的现在拥有者通过无线软件升级，将获得这两项性能的提升。
The current theory is that when fire from Allied air raids in 1944 consumed 50 konigstrasse, the contents of Oewerdieck's office fell through the floor, and then the building collapsed on top.
当前的理论是，当1944年Allied空袭带来的大火吞噬了50konigstrasse的时候，Oewerdieck的这个办公室塌陷到地下，之后整个建筑都倒塌了。
A view of the National Mall in Washington, D.C., shows construction of the current National Air and Space Museum building underway in December 1972.
从华盛顿特区国家广场的视角看1972年12月正在建设中的国家航空航天博物馆场景。
Current applications are focused on the purification and the treatment of water and air.
目前的应用主要集中在水和空气的净化和处理方面。
The US is bankrupt, with the current goal to maintain an air of confidence that the US will pay its debts.
美国破产了，当前的目标是维持对美国将会支付债款有信心的这种气氛。
Based on the scale of current urban residential and the importance of indoor air quality at homes, the problem of indoor air pollution of four cities in China was studied in this paper.
本论文从目前中国城市住宅的规模和住宅室内空气品质的重要性出发，对中国四城市的住宅室内空气污染问题进行研究。
"The current state of irresponsible city planning, air-pollution and economic crisis asks the architecture profession to rethink the process of building," they said.
“不合理的城市规划、空气污染和经济危机的现状要求建筑行业重新思考建筑建造的过程，”他们说。
Pay special attention to the air gap, because current of air gap is easy to be gushed out.
还要特别注意铸造材料的气隙，因为在气隙中水流易于涌出。
Air circuit breaker An air circuit breaker automatically interrupts the current flowing through it when the current exceeds the trip rating of the breaker.
空气线路断路器空气线路断路器的功能是当电流大小超过断路器的过流跳脱设定值后自动断开。
Efficient ventilation and sound air current are significant to improve indoor air quality, control the contamination concentration, and ensure the realization of healthy and comfort air-condition.
有效地通风和合理的气流组织对于改善室内空气品质，控制室内污染物浓度，保证实现健康建筑、健康舒适性空调有着重要的意义。
While people were not "throwing their hands in the air in despair", there was anxiety about how the current level of EU farming grants will be sustained, the source said.
该消息人士表示，虽然人们没有彻底绝望，但是对于将如何维持欧盟农业补贴的现有水平有人表示不安。
In the ENTR 'acte there was a current of chill air in Ellen's box, the door was opened, and Anatole walked in, bending and trying not to brush against any one.
幕间休息时，海伦的包厢里有一阵袭人的寒气，门打开了，阿纳托利弯下身子，尽力不挂着别人，走了进来。
And found-that to increase the degree of openness of fiber and to control correctly the entering air current are two efficient ways to improve fiber web irregularity.
并认为提高纤维开松程度、梳理程度，控制补风方式是降低纤维网横向不匀率的有效途径。
A cold current of air came in when the window was open.
窗户一打开，进来一股冷空气。
Based on the boundary condition of jet flow in a niche and the interaction of jet with air current, a pressurization relation equation have been established.
本文根据壁龛射流的边界条件，进行射流与通风气流之间运动和力的作用关系分析，建立了壁龛射流的增压关系式。
It introduced the current situation Sources and kinds of indoor air pollutant. The harm and control technology of indoor air pollutant were discussed.
本文介绍了室内空气污染的现状、来源、种类，探讨了室内空气污染对人体的危害及其控制技术。
To avoid shortcomings of conventional current transducers in insulation and saturation, the hybrid optical sensor head of a new type air core current transducer is presented.
针对传统电流互感器易饱和﹑绝缘复杂等缺点，介绍了一种混合式光电电流互感器传感头用于测量的新型空心电流互感器。
In this paper, the optimization problem of glass tube air preheater is studied. A current computer code for optimal design of a tubular air preheater is developed. A case calculation is finished.
本文研究玻璃管空气预热器的优化问题，提出了管式空气预热器优化设计的通用计算机软件，并进行了实例计算。
In this paper, the optimization problem of glass tube air preheater is studied. A current computer code for optimal design of a tubular air preheater is developed. A case calculation is finished.
本文研究玻璃管空气预热器的优化问题，提出了管式空气预热器优化设计的通用计算机软件，并进行了实例计算。
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