查询词典 gas-mask

The core of studying the digenesis of oil and gas is digenetic dynamics, a theory of discussing the accumulation and distribution rules of oil and gas.

成藏动力学是以研究油气成藏过程为核心，以探讨油气聚集和分布规律为目的的理论。

Every year, I clean my clothes with gas, filling the whole house with the sharp smell. My mom never ask for my help, because I usually do the job dilatorily, leaving the gas vaporizing greatly.

每年用汽油擦洗衣服，满房都是那清刚明亮的气息；我母亲从来不要我帮忙，因为我故意把手脚放慢了，尽着汽油大量蒸发。

The property of dimethyl ether is compared with that of LPG and natural gas,and the feasibility of using DME as city gas is discussed.

进行了二甲醚与LPG和天然气的性质比较，探讨了二甲醚作为城市燃气的可行性。

Oil and gas operating cost is the direct embodiment of oil and gas production condition.

油气操作成本是油气生产状况的直接体现。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

This makes more and more people pay more attention to studies and applications of numerical simulation in thermal recovery. In this research, we have developed a reliable mathematical model for thermal recovery, which takes a full consideration of the effect of viscos, gravitical and capillary forces on the three-phase flow of gas, water and oil, the effect of the temperature on the medium characteristics of liquid and solid, the phase equilibrium of gas-liquid in each component, heat transportation including connection, conduction and radiation as well as heat losses in both the overburn and underlying strata. In the space discreation of the mathematical model, we have proposed a new method based on the improvement of the conventional nine-points difference approximation, which has a higher difference accurancy.

本项研究以热力采油的主要机理为基础，充分考虑在粘性力、重力和毛管力作用下油水气三相流动，考虑温度对各种流体和固体介质物性的影响，考虑每一组分中汽液两相的相平衡，考虑热在地层中的传导、对流和辐射以及上下盖层的热损失，利用热力学第一定律、质量守恒定律和流体迁移定律，建立了正确可靠的注蒸汽数学模型；在对数学模型进行空间离散时，利用控制有限体积积分法，对以往的九点差分近似作了合理的改进，使其具有较高的差分近似精度：结果表明，该公式的近似精度要比以往文献中所给的九点差分近似精度高，可以认为，在油藏数值模拟中，如果遇到非均质情况，使用这种九点差分近似更合理。

The displacer piston does not extract any power from the expanding gas but only serves to shuttle the working gas back and forth between the hot and cold ends.

该位移活塞不会从不断扩大的气体中提取任何权力，但只是为了往来的热点和冷端的工作气体来回。

1 Equipment of powder materials treatment: Reduction furnace for metal powder( including push rod type, steel strip type and net strip type), device of ammonia decomposing (dew point or flux feedback control type), rotary motion double cone vacuum dryer, whole set of equipment of high pressure water atomizer, whole set of gas atomizer, whole set of equipment of vacuum gas atomizer( vacuum immediate frequency induction melting furnace included), rotary motion calcine kilnpatent awarded

粉体材料处理设备：金属粉末还原炉（推杆式、钢带式、网带式），氨分解发生器（可选配露点、流量反馈控制型），回转双圆锥真空干燥器，成套高压水雾化设备，成套气雾化设备，成套真空雾化设备（含真空中频熔炼炉，实现炉温反馈控制），回转锻烧炉。

According to the characteristic of mixture combustion of air and gas, it's said that combustion system adopts the technology of double-cross amplitude limitation and cascade proportional control, also designs the implementations of furnace pressure, wind pressure, gas pressure and regenerative combustion system in the article.

2根据空气和煤气混合燃烧的特点，提出了燃烧系统采用双交叉限幅串级比例控制技术，并设计了炉压、风压、煤气压力、蓄热式燃烧系统的实施方案。

By transformation of the downcomer of the Claus gas separator,methanol entrainment by Claus gas is eliminated,the oil content in the methanol in the system reduced,and good economic benefit obtained.

对克劳斯气分离器降液管改造后，消除了克劳斯气夹带甲醇的现象，降低了系统甲醇中的油含量，取得了较好的经济效益。

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。