查询词典 gas-mask

During the opening and shutting-in process of gas well, the gas flowing within the borehole is transient, where the flowing parameters including the pressure and temperature of the gas are the functions of well depth and time.

气井开关井过程中，井筒内气体的流动为瞬变流动，其压力等流动参数是井深和时间的函数。

A series of erosion-corrosion test has been done to J55 steel under the influence of current of gas-liquid phase by indoor self-made devices, and the corrosion mechanism of current of gas-liquid phase to oil pipe's inner surface has been got. The results show that oil pipe's inner surface will be corroded fleetly by liquid medium and corrosion products will form on it. But at the same time, the corrosion products or protective layer will be removed from the inner surface of steel pipes under the alternate impact of high speed gas and liquid flow, and on this bare steel surface corrosion film will form again and be removed again. Thus, by these ways the corrosion is exacerbated. Surface erosion-corrosion failure comes into being with the circulation of this process going on.

本文主要在气液两相流作用条件下，通过室内自制装置，对管材钢J55做了系列冲刷-腐蚀试验，结果表明，气液两相流对钢管内表面冲刷－腐蚀的机理是钢管内表面会受到液体介质的快速腐蚀，生成腐蚀产物，同时钢管金属表面不断被具有高流速的气液相交替地冲击，不断地从金属表面脱去保护膜或腐蚀产物，裸露的钢表面又会被介质快速腐蚀形成腐蚀膜后，再被两相流冲掉，如此反复，造成管内金属表面膜的连续破坏，使腐蚀加剧，最终导致钢铁表面的冲刷腐蚀失效。

A ground system was designed to separate drilling cuttings from gas in gas drilling. The system is composed of two-stage series-wound cyclone separators and two filters. The high-cost drilling gas purified by this system can be recovered and recycled.

根据气体钻井的特点，设计了由两级串联的旋风分离器与两台过滤器组成的气体钻井地面分离系统，对成本较高的气体钻井介质进行回收和循环利用。

In the present invention, platinum-carbon catalyst, perfluoro sulfonic acid resin solution and absolute ethyl alcohol are uniformly mixed under ultrasonic conditions; mixture is uniformly smeared on a micro-porous layer of carbon cloth or carbon paper in a brushing or printing method, and a traditional Pt/C gas porous electrode is obtained after drying; silicon oil is adopted to infiltrate into pores of a catalyst layer and a diffusion layer of the traditional Pt/C gas porous electrode, and then the ordering anti-drowning gas porous electrode is obtained after drying.

本发明是将铂碳催化剂、全氟磺酸树脂溶液和无水乙醇在超声波条件下混合均匀，采用涂刷或印制的方法将混合物均匀涂布到碳布或碳纸的微孔层上，干燥后制得传统Pt/C气体多孔电极；然后将硅油渗入到传统Pt/C气体多孔电极的催化层和扩散层孔隙中，干燥后制得有序化抗溺水气体多孔电极。

For the proposed project the waste gas emission locations include: preheating furnace of hard alloy parts line (when natural gas is used for heating while excess heat heating system goes wrong), melting furnace, refining furnace, heat treatment furnace for machining unit and steam boiler. The pollutants are SO2, NOx and smoke dust contained in the smoke generated from the above locations. All the above pollution generating facilities use the most clean energy, natural gas, for burning. Meanwhile, on melting furnace and refining furnace low nitrogen combustion technology such as low NOx burner is applied, and the generated smoke is discharged via chimney.

拟建项目之废气排放部位为硬质合金件生产线的预热炉（余热加热系统故障采用燃天然气加热时）、熔化炉和精炼炉及机加工机组热处理炉和蒸汽锅炉，污染物为以上部位产生的烟气中含有SO2、NOx以及烟尘，以上各产污设备均采用最清洁的能源——天然气为燃料，同时熔化炉和精炼炉采用低NOx烧嘴等低氮燃烧技术，产生的烟气由烟囱排放。

In the light of this problem application ground changes color atlas of photograph of logging, hot vent one's anger to analyse, combinative gas is measured logging and take off an analysis completely, from the chemical composition proceed with that analyses derv, unusual mechanism undertook complete to mixing the energy of life that fluid of derv artesian well causes to measure hydrocarbon be analysed deep, found out occurrence gas to measure the reason with complete unusual hydrocarbon, measured an explanation to provide reliable basis for gas.

针对此新问题应用地化录井、热解气相色谱分析，结合气测录井和全脱分析，从分析柴油的化学成分入手，对混柴油钻井液引起的气测全烃异常机理进行了深入分析，找出了出现气测全烃异常的原因，为气测解释提供了可靠的依据。

In order to clear off the upper-corner's gas accumulation in coalface effectively, a new method of the rotary radial-jet dispersing the upper-corner's gas accumulation was put forward, This method can make the gas concentration in upper-corner drop below 1% that is limited by Safety Regulations in Coal Mine within 20 minutes.

为了有效地治理工作面上隅角积聚的瓦斯，提出旋转迳向射流驱散工作面上隅角积聚瓦斯的新方法，可使上隅角积聚区瓦斯浓度在20min内下降到《煤矿安全规程》规定的1%以下。

For lack of helium gas resource in China,heliumbearing natural gas has become the only source of producing helium gas in industries so there are obvious difficulties in the abstraction technology without costeffectiveness.

含氦天然气迄今仍是工业化生产氦气的唯一来源。我国氦气资源相当贫乏，含量很低，提取难度大，成本高。

The second WesttoEast gas pipeline, as the first longdistance crosscountry gas pipeline in China, will face severe challenge of peakshaving and emergency gas supply.

西气东输二线作为中国第一条跨国长输天然气管道，面临储气调峰的问题。

Compared with the low absorption efficiencies of a gas of atoms and molecules (less than 10%), it is demonstrated experimentally that a gas of clusters has much higher absorption efficiency. The absorption efficiencies to the laser energy are as high as 90% and 50% for rare gas clusters and hydrogen clusters, respectively.

实验发现，相对于原子或者分子气体喷流对激光的低吸收效率（小于10％），惰性气体团簇喷流和氢分子团簇喷流对飞秒强激光脉冲有非常强的吸收，吸收效率分别达90％和50％以上。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。