The improvement seal was composed of combination of stuffing seal and labyrinth seal and protective gas was used.
对填料密封设计进行改进，采用填料与迷宫组合密封结构，加气体保护密封方案。
Using the argon gas as protective gas, the content of Sr in alloy was more than that of alloy made by the flux method.
用氩气保护，制备出的合金中锶实际含量高于熔剂法制备的合金。
A protective gas generation system is adopted with dissociation of liquid ammonia to get hydrogen and air separation to get nitrogen.
生产氢有多种方法：天然气的蒸气重整，水的电解，氨的分解，石油蒸馏和氯生产的副产品。
An ozone hole is an area of the ozone layer that is seasonally depleted of the protective gas-such as the well-known hole over Antarctica.
臭氧空洞是指臭氧层中季节性消耗保护性气体的一个区域，例如著名的南极上空的臭氧空洞。
By adopting blowing side protective gas, the problem that gas hole was easy to form owed to evaporation of zinc and moisture of circumstances in laser...
结果表明，在侧吹保护气体的条件下，激光深熔焊接能有效地避免高强度镀锌钢热影响区的软化和控制焊缝气孔及焊接接头裂纹的产生。
However, both flux and protective gas would lead to some problems such as inclusion, environmental pollution and complication of melting process and equipment.
但是，熔剂保护法和气体保护法致使熔炼工艺及设备复杂化、易产生央杂，并且污染环境；
And your esophagus naturally constricts around anything inside it, so even though there is a thin protective gas layer, the esophagus will manage to make contact with the liquid nitrogen.
而且食道会压缩里面的任何东西，因此即便有稀薄的气垫保护，液氮还是与食道发生了亲密接触。
Such "chorus waves" form in a region of space that lies just above the plasmasphere, a section of Earth's protective magnetic bubble filled with plasma, or electrically charged gas.
此类在宇宙某一地区内形成的“哨声波”位于等离子层的正上方，这是地球的保护性磁泡，充满了等离子，或者说是荷电气体。
Endothelial cells manufacture a magical protective molecule of gas called nitric oxide, which protects our blood vessels.
内皮细胞可以释放一种保护我们血管的神奇气体分子——一氧化氮。
We entered the zone many times with no protective suits only goggles and gas masks.
很多次我们进入试验区域的时候，除了护目镜和防毒面具，什么保护装备都没有。
The company offers products include: gas alarming device series, of personal protective equipment series, sound-light alarm series, other alarm equipment series, etc.
公司所提供的产品包括：气体报警仪系列、个人防护用品系列、声光报警器系列、其他报警设备系列等。
CONCLUSION Roxithromycin has a protective effect on rat acute lung injury induced by LPS through regulating cytokines, improving gas exchange ability, and inhibiting lung permeability.
结论罗红霉素能改善大鼠急性肺损伤时气体交换能力，调节肺部细胞因子，对内毒素诱导的急性肺损伤有保护作用。
This paper mainly researches on the technique of draining long distance pressure relief gas in bed plate tunnel under the circumstance of mining protective coal seam.
本论文主要是针对远程下保护层开采条件下，对底抽巷上向穿层钻孔抽放远程卸压瓦斯技术进行了深入的研究。
The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.
通过分析近距离保护层开采、水力掏槽法及边抽边掘技术防治煤与瓦斯突出原理及实践应用，从而有利于煤与瓦斯突出矿井选择合理有效的防突技术。
This paper introduced the technical of using drilling downward hole from working surfale in protective coat bottom tu pull out goaf gas, and the effects were analysed and summarized.
前言：介绍了在被保护层底板巷向保护层工作面施工下向穿层钻孔，抽采保护层工作面采空区瓦斯的具体做法，并对取得的效果进行了分析总结。
When the protective coal seam is mined, the gas management on the protected coal seam is a very important job.
保护层开采时，对被保护层的瓦斯治理是一项非常重要的工作。
Our experimental results indicate the necessity of using inert gas as a protective measure in obtaining satisfactory welding effects.
试验结果表明了采用惰性气体保护焊接的必要性。
MF27 Full-Eyepiece Gas Mask is a kind of monocular vision filtering protective device, which can protect the personal respiratory organs.
MF27型全眼窗防毒面具是一种过滤式单眼窗个人呼吸器官防护器材。
According to the different welding materials, if adopts the carbon dioxide gas or mixed gas to be the protective medium to carry out the welding.
根据焊接材料的不同，可采用二氧化碳气体或混合气体作为保护介质进行焊接。
AJ type safety joint is a specialized joint consisting of two parts. The specialized joint takes protective effect for drilling stem in drilling, repairing and test oil (gas) engineering, etc.
AJ型安全接头是一种由两件组装起来的专用接头，是钻井、修井、试油(气)等工程中对钻柱起保护作用的一种专用工具。
The results show that adopting CO2 gas protective welding instead of electrode welding rod can increase the efficiency of ensuring welding quality, which can also bring better economical benefit.
经过实践证明，替代焊条电弧焊，而采用CO2气体保护焊可提高效率，保证焊接质量，带来较好的经济效益。
On gas withdrawal systems, use a check valve or other protective apparatus in any line or piping from the container to prevent reverse flow.
对于气体排出系统，使用止回阀或其它保护性装置以防止回流。
The results show that the adding SO2 gas can improve the protective effect of HFC125 to magnesium alloy melt.
结果表明：SO2气体的添加可提高HFC125气体对镁合金熔体的保护效果。
In accordance with properties of coal bed gas reservoir, the paper has probed into the protective techniques.
本文针对煤层气储层的特点，探讨了煤层气井取心技术及储层保护技术。
Cotton masks, protective glasses and gas mask should be provided for laborers working in conditions of health-harming gas, steam or dust.
在有危害健康的气体，蒸汽或者粉尘的场所操作的工人，工厂应分别供给口罩，防护眼镜和防毒面具。
The utility model discloses an external underground cable protective sleeving, relating to an assorted device for oil and gas well underground cables.
一种外置式井下电缆防护套，涉及一种油气井井下电缆配套装置。
If the protective seal is not air proof or poor gas purity, it will also bring welding quality problems.
气路有密封不好的问题，或气体纯度不高，也会引起焊接质量问题。
If the protective seal is not air proof or poor gas purity, it will also bring welding quality problems.
气路有密封不好的问题，或气体纯度不高，也会引起焊接质量问题。
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