尽管它确实是气密的，但却只能再循环95%的水。
While its atmosphere was sealed to air exchanges, the setup recycled only 95 percent of its water.
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.
气密的V形密封器，两个压缩的编织金属网布气隙间隔器，略过管的一部分滑向另一部分。
By surrounding a gas-tight, pattented V-Seal with two compressed knitted wire mesh air gap spacers, the connection is made by simply sliding one section of pipe over another.
但不幸的是，这种高气密的设备不容易保养维护，特别是当乘客们想要在车与车之间走动时显得更为困难。
Unfortunately, this air-tight seal is often hard to maintain, especially if passengers want to walk between cars.
海拔每上升1000米大气压力- - -也就是空气密度- - -会降低大概11%(虽然精确的公式比这要更复杂。)
Every 1000 metres increase in altitude reduces atmospheric pressure - and hence the density of the air - by about 11 per cent (though the precise formula is more complicated than this).
不过两个可以使用的气密室中有一个是空的。营救人员担心这四名矿工无法抵达另一个气密室。
But one of the two available Chambers is empty and rescue workers fear that the four miners were unable to reach the other chamber.
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.
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.
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.
日冕的电离气体（又叫等离子体）不仅非常炙热，而且异常稀薄，其密度还不到组成太阳主体的氢气密度的十亿分之一。
As well as being very hot, the ionised gas of the corona (called plasma) has a superthin consistency. It is less than a billionth of the density of the hydrogen that makes up the main ball of the Sun.
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.
在约翰内斯堡，完全相同的射击既可能比球门飞得高也可能撞到人墙，因为更低的空气密度既降低了拖曳力也降低了旋转效应。
In Johannesburg, the exact same shot would either fly over the crossbar or hit the wall, as the lower air density reduces both drag and the effect of spin.
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.
飞机采用非气密舱和四台动力不足的涡轮螺旋桨发动机，使它仅仅适用于低-中空飞行。
The aircraft has an unpressurised cabin and four underpowered turboprop engines, making it only suitable for low- to medium-altitude flight.
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.
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.
两侧都经过精密光亮磨光的刀片确保填料腔的气密性密封。闸板的密封面经过研磨，以提供最好的阀座密封性。
Precision ground blade on both sides for tighter packing chamber sealing. Sealing face of the gate is lapped to provide the best possible seat tightness.
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.
阀门的初始阀座气密性可以通过水利测试进行检验，这种测试对以后长期的气密性影响很小。
The initial seat tightness of valves which can be proven by hydro-testing has little effect on extended long-term tightness.
塑封集成电路因其是非气密性封装，封装材料热膨胀系数的不同以及被粘接材料表面能低，是造成塑封电路离层或开裂的内部原因。
First of all, the internal reason for the delamination or cracking is the different CTE of the packaging materials and the low surface energy of the adhesions.
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.
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.
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.
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.
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.
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.
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.
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