根据监控数据显示，今年伦敦市空气粉尘浓度第36次达到危险临界值，成为了欧洲污染最严重的城市之一。
The City of London has been found to be one of the most polluted places in Europe after monitoring equipment recorded dangerous levels of minute particles for the 36th time this year.
第5章空气、水分与天气变化。
正常情况下，客舱空气来自于发动机低能量的第5级，9级空气自动分配以满足用户系统的需要。
The normal cabin air source is obtained from the 5th-stage of the engines at low –engine power, 9th-stage air automatically substitutes to meet user system needs.
飞行中，发动机是主要的气源。空气由发动机高压压气机第7级或第10级引出。
The aircraft engines are the primary source of compressed air in flight. The air is bled from the 7th or 10th stage of the engine High Pressure (HP) compressor.
压缩空气反复暴露后第3天，上述变化均恢复正常。
All these changes disappeared on the 3rd day after exposures.
农业和林业用拖拉机和自驱动机械。驾驶室环境。第4部分：空气过滤元件试验方法。
Tractors and self-propelled machines for agriculture and forestry - Operator enclosure environment - Part 4: air filter element test method.
空气制动系统。气压作动装置。第2部分：制动室楔式制。
Air braking systems - pneumatic actuator - part 2: brake Chambers, technical data for wedge brake.
1977年修正并增加第160至169条款，《洁净空气法案》要求，《州实施计划》应包括“防止空气质量严重恶化”的措施。
As amended in 1977 by addition of sections 160-169, the Clean Air Act requires that SIPs include measures to "prevent the significant deterioration" of air quality.
（高二册，第198页）太空中没有空气，这也说明了为什么在太空星星看来并不闪烁，不想从地球上看到的那样。
The absence of air also explains why the stars do not seem to twinkle in space, as they do from the earth.
详情请阅读安装第x X页上有关空气管道。
Please read the installation details regarding air ducting on page xx.
发电站设备的采购指南。第6 - 1部分：涡轮机辅助设备。空气分离器。
Guide for procurement of power station equipment. part 6-1: turbine auxiliaries. deaerators.
对果皮传感器2检测的排名，是根据第2的散热器温度特性，以及通过散热器2合格的空气流量。
The position of detection of the peel sensor 2 is determined according to a temperature characteristic of the radiator 2, and a flow rate of the air passing through the radiator 2.
文摘：本文对《空气动力学学报》 1997年第4期上发表的氩等离子体的热导率的实验研究结果的可靠性做了讨论。
Abstract : the reliability of the experimental results concerning the thermal conductivity of an argon plasma reported in acta aerodynamica sinica , 1997 , 15 ( 4 ) has been discussed.
文摘：本文对《空气动力学学报》 1997年第4期上发表的氩等离子体的热导率的实验研究结果的可靠性做了讨论。
Abstract : the reliability of the experimental results concerning the thermal conductivity of an argon plasma reported in acta aerodynamica sinica , 1997 , 15 ( 4 ) has been discussed.
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