查询词典 air-tight

Jet orifice had been added for air entry,only little air was got into the hole bottom,the most of air entered into internal pipe through the jet orifice ,then was carried out from the hole bottom.

针对贯通式潜孔锤在复杂地层钻进中遇到的问题，对反循环钻头进行了改进：在钻头上部增加喷射孔，使气流只有一少部分进入孔底，大部分经喷射孔直接进入内管，排至地面。

Induced drag occurs when the air flow separates from the surface of a wing, while friction drag is due to the friction between the air and bird moving through the air.

诱导拖动发生时，气流分离，从表面的一翼，而摩擦拖曳是由于摩擦之间的空气和鸟移动通过空气。

For example, it is known to place germicidal or ultraviolet lamps into the air stream of air handling units in order to clean and disinfect air which may be recirculated in an enclosed space.

例如，它是将紫外线杀菌灯放置到空气中的空气流处理单元中，以便清洁和消毒空气可循环在封闭的空间。

RECIRCULATED AIR, Conditioned air mixed with air from the passenger compartment.

再循环空气，调制后的空气与客舱来的空气之混合。

RECIRCULATED AIR, Conditioned air mixed with air

调制后的空气与客舱来的空气之混合。

Flight plan monitor of air target is an important content in air traffic control and air situation awareness.

空中目标的飞行计划监控是空中交通管制及对空态势感知的重要内容。

Based on the results simulated by PRECIS (Providing Regional Climates for Impacts Studies), which is developed in the Hadley Centre for Climate Prediction and Research, changes of surface air temperature and precipitation under SRES B2 scenario in South China during 2071~2100 are analyzed. It is shown that, compared to baseline (1961~1990), surface air temperature in 2071~2100 would increase by 2~4℃, precipitation in summer would increase in the north part to 22°N, while the precipitation in winter would decrease in the whole areas of South China. The climate trend of the surface air temperature would be positive, however the climate trend of the precipitation would be negative, the occurrence frequency of extremely high temperature events and extremely heavy precipitation events would increase.

利用英国Hadley气候预测和研究中心的区域气候模式系统PRECIS，模拟分析基于政府间气候变化专门委员会 2000年发布的《排放情景特别报告》中设计的B2情景下华南区域2071~2100年的温度和降水量的可能变化，结果显示：2071~2100年均地面温度相对于气候基准时段（1961~1990年）上升约2~4℃；华南区域未来夏季降水量在22°N以北区域较气候基准时段增加，而以南区域减少；冬季降水则表现为华南区域较气候基准时段减少。2071~2100年华南区域的温度气候趋势系数为正值，年均降水气候趋势系数为负值。2071~2100年的高温事件和强降水事件的发生频率均比气候基准时段明显增加。

Xinjiang has 11 airports, both newly built and enlarged, with international air routes connecting Urumqi with Alma-Ata, Tashkent, Moscow and Islamabad, as well as chartered flights to Hong Kong. In all, there are 92 air lines radiating from Urumqi to 65 cities in other parts of the country and abroad and to 12 prefectures and cities within the autonomous region. The total length of the air routes is 161,800 km.

新疆民航现已新建扩建了乌鲁木齐等11座机场，开通了乌鲁木齐至阿拉木图、塔什干、莫斯科、伊斯兰堡的国际航线，至香港的包机航线和跨省航线及自治区区内航线92条，形成了以乌鲁木齐为中心，连接国内外65个大中城市和区内12个地、州、市的空运网，通航里程已达16.18万公里。

A radio that can be used for air-to-air and air-to-ground communication is a significant part of that investigation.

一个电台可用於空对空和空中到地面的沟通是一个重要的部分，即调查。

This is going to be true for both future air-to-air and air-to-ground weapons.

对于未来的空空和空地武器来说将会成为现实。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐