有利于提高墙体的防水和气密性。
气密性包装有两个干燥剂袋。
介绍了高炉煤气压缩机采用氮气密封的改造。
Reformation of nitrogen seal of blast furnace gas compressor is introduced.
最初考虑的是气密性、热容量和高级隔热材料。
Primary considerations were airtightness, thermal mass and high levels of insulation.
使建筑气密性是指从传统的技术做不同的事情。
Making the building air tight means doing things different from traditional techniques.
一俟加热，它再次收缩，形成一个气密而耐用的包装。
Once heat is applied, it shrinks again, creating an air-tight, durable wrapping.
热空气比冷空气密度小，因此热空气总在冷空气上方。
Warm air is less dense than cooler air so it ends up layered on top of the downward moving cooler air.
引擎将高超音速飞机带向空气密度、阻力比较稀少的高度。
That engine would carry the hypersonic craft to an altitude where air density and resistance are less.
即使压力不变，气温的变化也能引起空气密度的巨大变化。
Even when the pressure stays the same, great changes in air density are caused by changes in temperature.
经碲变质处理的铝硅合金是制造高气密性铸件的理想材料。
The Al-si Alloy modified by tellurium is an ideal material for making high gastight castings.
转动轴腔充气密封，消除了粉尘粘结现象。带自动清洗功能。
The rotation drive shaft is sealed with inflatable chamber, eliminating the dust coalescence phenomenon. There is a function for automatic cleaning.
介绍了氯化丁基橡胶气密性基本原理及影响气密性能的因素。
In this paper, we introduce the airproof principle of butyl chloride rubber and the factors related to the airproof.
详细介绍过热蒸气密度补偿方案及新的过热蒸气密度补偿式。
The compensation scheme for the density of superheat steam and the new density compensation formula are introduced in detail.
大气压力随高度增加而降低，大气密度也随着高度增加而降低。
Atmospheric pressure decreases with increase in altitude and so does the density of the atmosphere.
状态良好的保温集装箱适合于熏蒸，不需要用气密性帐幕苫盖。
Insulated containers in a good sate of repair are suitable for fumigation and do not require to be covered with gas tight sheets.
但他表示，总有一天它会比制作气密性容器的其他方法成本更低。
But he says one day it may be cost less than other methods for making gas-leak resistant containers.
阀门在试验过程中可翻转90度工作，特别适用气密封性能试验。
Valve can turn 90 degree working in testing course, especial suitable for property experiments of gas seal.
在一个星期以后，清洗并且消毒酸坛、桶盖、气密室和塑料管材。
After a week, clean and sanitize the carboy, the bung, the airlock and the plastic tubing.
中空玻璃设计，隔音隔热，具有极佳的水密性和气密性，防风防水。
Our insulating glass, soundproof and heat resistant, is good at water & air tightness and can proof water and wind.
柯曼门窗系统创造健康、舒适的居住环境，离不开优良的气密性和水密性。
Gas tightness and water tightness ensure Goldcommon door and window system to produce healthy and comfortable living conditions.
它具有良好的气密性、隔热性、阻燃性等性能，受到世界各国的普遍重视。
It has a good gas-tight, insulated and fire-retardant properties, etc., are common to all countries in the world.
因此，在使用鸭嘴阀时应保持两个半球面的光洁，以确保良好的气密效果。
Therefore, the use of Safety Relief Valves the two hemispheres should be kept clean surface to ensure good sealing effect.
所有双层底为水密和油密，并应按规范要求由船东代表进行水压或气密试验。
All double bottom is watertight and oiltight. Compressed air testing and water-pressure tests can be carried out according to the classification society and by Owner's representative.
解决这一问题的方法之一是利用风能来压缩空气，使空气进入气密的地下储气站。
One answer is to use the energy to compress air, which can be squirrelled away in hermetically sealed underground caverns.
如果第二重合成橡胶阀座在火灾期间被损坏，则金属-金属阀座还可以保证气密性。
The metal-to-metal seat ensures tightness if the secondary elastomer seat is damaged during the fire.
然而，由于气密管的建造难度，他们更会建筑跨越山谷的桥梁，而不是从谷底虹吸湖水。
However, due to the difficulty they had in building air-tight pipes it was more effective for them to bridge across valleys than to try to siphon water up from the valley floors.
介绍干气密封的结构、工作原理、优越性，以及在离心泵轴封领域的应用情况和前景。
The paper introduces the structure, working principle, advantage of gas seal in centrifugal pump and its application and prospect.
介绍干气密封的结构、工作原理、优越性，以及在离心泵轴封领域的应用情况和前景。
The paper introduces the structure, working principle, advantage of gas seal in centrifugal pump and its application and prospect.
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