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natural gas
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  天然气
     Natural Gas Reservoir Formation Mechanism of Ordovician and Its Relation with Tectonic Evolution in Ordos Basin
     鄂尔多斯盆地奥陶系天然气成藏机理及其与构造演化关系
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     Kinetic Simulation of Thermogenic Natural Gas Generation and Its Geological Applications
     热成因天然气生成动力学模拟及其地质应用
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     A Study of the Formation of Natural Gas Pools in Songliao Basin with a Quantitative Appraisal of Exploration Targets for Deep Natural Gas
     松辽盆地天然气成藏规律及深层天然气勘探目标定量评价研究
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     Operation Optimization of Long-Distance Natural Gas Transmission Pipelines and Compressor Stations Load Scheduling
     天然气长输管道运行优化及压气站负荷调度研究
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     The Dynamic Characteristics of Natural Gas in Daqing Placanticline and the Multiplex Hydrocarbon-generating Mechanisms in the Deep of Songliao Basin
     大庆长垣天然气的动态特征及松辽盆地深层多元生烃机制
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  “natural gas”译为未确定词的双语例句
     The Mechanical Behavior of Salt Rock and Its Application on the Natural Gas Storage Construction
     盐岩力学特性及其在储气库建设中的应用研究
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     AN ANALYSIS OF THE GEOLOGICAL CONDITIONS OF FORMATION OF NATURAL GAS RELATED TO COAL FORMING IN UPPER PALEOZOIC IN SHAN-GAN-NING BASIN
     鄂尔多斯盆地上古生界煤成气地质条件分析
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     Origin of the Natural Gas in Chang Xin Limestone of Upper permian in Southeastern Sichuan
     川东南上二叠统长兴组灰岩大然气成因
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     GAS GENESIS CONDITIONS AND PROSPECTS OF NATURAL GAS WITHIN COAL-SERIES STRATUM OF JURASSIC IN JUNGGER BASIN OF XINJIANG
     新疆准噶尔盆地侏罗纪煤系地层成气地质条件与找气前景
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     Design Theory of Quasi-Transient state of Killing Wen in Empty Hole Filling with Natural Gas——The First Bottom Pressure is Equal to the Formation Pressure
     天然气井空井压井拟瞬态设计理论——第一次井底压力等于地层压力
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  相似匹配句对
     On Natural Gas's Storage
     天然气的储存
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     Natural Gas Hydrate
     天然气水合物
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     Natural.
     Natural(天然等同)相近。
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  natural gas
Deep-seated gas is defined in this paper as natural gas generated under the combined action of high temperature, high pressure, and environment media.
      
As to organic matter vertical evolution, deep-seated gas is natural gas, which is generated and deposited under the position of an oil generation window.
      
The modeling of carbon isotope kinetics and its application to the evaluation of natural gas
      
The modeling of carbon isotope kinetics of natural gas is an issue driving pioneering research in the oil and gas geochemistry in China and internationally.
      
Combined with the sedimentary burial history and basin geothermal history, the modeling of carbon isotope kinetics provides a new and effective means for the determination of the origin and accumulation history of natural gas pools.
      
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A chromatographic analytical procedure has been developed for the gaseous impurities in concentrated acetylene gas manufactured from natural gas.In this work a thermal conductivity detector,a potentiometer recorder,and hydrogen as carrier gas were used. Column I packed with a mixture of salicylaldehyde and liquid paraffin as stationary liquid was used to separate and analyse the components such as allene,methylacetylene, butadiene,vinylacetylene,and diacetylene.The time required for a complete analysis...

A chromatographic analytical procedure has been developed for the gaseous impurities in concentrated acetylene gas manufactured from natural gas.In this work a thermal conductivity detector,a potentiometer recorder,and hydrogen as carrier gas were used. Column I packed with a mixture of salicylaldehyde and liquid paraffin as stationary liquid was used to separate and analyse the components such as allene,methylacetylene, butadiene,vinylacetylene,and diacetylene.The time required for a complete analysis is about 18 minutes. Column Ⅱ containing a serial packing of adsorbents of active carbon and Type 5A molecular sieve was used to analyse oxygen,nitrogen,methane,and carbon monoxide. Carbon dioxide,ethylene,and acetylene were analysed on column Ⅲ filled with active carbon and silica gel in series.Samples were injected separatively.The total time of analysis is about 20 minutes. The results of determination and computation indicate that the minimum detectable quantity of gaseous impurities is 1.16—36 ppm.With impurities ranging from 0.005 to 0.5%,the reproducibility expressed as relative average deviation is less than ±10%,and the accuracy expressed as relative average error is less than ±5%.

为测定天然气制取的浓乙炔中的微量杂质气体,采用氢作载气,自制热导池为鉴定器,国产大华电子电位计为记录仪的气液色谱及气固色谱法,以水杨醛和液体石蜡混合固定液的色谱柱分离测定其中的丙二烯、甲基乙炔、丁二烯、乙烯基乙炔、丁二炔等五个组分,一次分析时间为18分钟。另以活性炭柱和5A分子筛柱串联及活性炭柱和硅胶柱串联,两次进样,分离测定其中氧、氮、甲烷、一氧化碳、二氧化碳、乙烯等组分,一次分析时间20分钟,本法的最低检出浓度为1.16至36.0×10~(-6),杂质气体含量在0.5至0.005%范围内的分析重复性以相对平均偏差表示<±10%,准确度以相对平均误差表示<±5%。

Micro-determination by gas chromatography has been studied for the higher acetylenes, e.g. methylacetylene, vinyl acetylene, and diacetylene, present in dimethyl formamide (DMF), which is used as solvent for selective absorption of dilute acetylene obtained by the partial oxidation of natural gas. Different higher acetylenes, except DMF and water, may be completely separated and eluted within 6—7 minutes on column with liquid phase of dibutyl phthalate dispersed on support 5701 at 30℃ and carrier gas...

Micro-determination by gas chromatography has been studied for the higher acetylenes, e.g. methylacetylene, vinyl acetylene, and diacetylene, present in dimethyl formamide (DMF), which is used as solvent for selective absorption of dilute acetylene obtained by the partial oxidation of natural gas. Different higher acetylenes, except DMF and water, may be completely separated and eluted within 6—7 minutes on column with liquid phase of dibutyl phthalate dispersed on support 5701 at 30℃ and carrier gas (H_2) flow rate 90ml/min. Methods of the quantitative desorption of higher acetylenes from DMF are investigated. Adsorption of the liquid sample on fire-clay filler in sampling device and flush with carrier gas under 85℃ give satisfactory desorption of higher acetylenes and eliminate the interference of liquid DMF. Fire-clay percolated with 5% glycerine as filler for the sampling device and pre-column is used with success to prevent the DMF vapor and moisture entering into the analyzer column. Standard curves of sample size vs. peak area are obtained and relative correction factors are determined for above three pure higher acetylenes, their mixture, and their DMF solution. The detection sensitivity of the method for methylacetylene is 4 ppm, for vinyl acetylene 10 ppm, and diacetylene 24 ppm. Maximum detectable concentrations are 2500 times of the detection sensitivity. Precision and accuracy of the method are ±4.60% and ±2.15% respectively. The time of a complete analysis requires 15—20 minutes.

以邻苯二甲酸二丁酯为固定液,采用5701型担体,配比10:100(重量);在柱温30℃和载气氢流速90毫升/分的条件下,可以使各种高乙炔完全分离,流出时间6—7分钟.考察了各种因素对溶剂二甲基甲酰胺(DMF)中高乙炔定量解吸的影响,找到了合适的避免溶剂干扰分析的进样方法、阻止气化的溶剂和水分进入色谱柱的合适的截留填料以及合适的解吸温度和进样量.求得了纯甲基乙炔、乙烯基乙炔、丁二炔以及它们的混合气和配入DMF中等样品的标准工作曲线和相对校正因子,其中以采用DMF中高乙炔分析为准的相对校正因子为好.此法的检出限量(重量计)为甲基乙炔4ppm,乙烯基乙炔10ppm,丁二炔24ppm.分析最高浓度可达检出限量的2500倍.方法的精确度为4.60%,准确度为2.15%,一次分析时间15—20分钟.

A fluorophotometric method for the determination of the micro quantity of sulfurin natural gas is reported.Organic sulfur compounds are first hydrogenolyzed at 900℃by hydrogen with platinum catalyst to hydrogen sulfide,the volume ratio of the gassample to the carrier gas being 1:10.The hydrogen sulfide formed is first absorbed bysodium hydroxide solution and then determined after the addition of mercury fluo-rescein by measuring the extent of depression of the fluorescence.This method is foundto...

A fluorophotometric method for the determination of the micro quantity of sulfurin natural gas is reported.Organic sulfur compounds are first hydrogenolyzed at 900℃by hydrogen with platinum catalyst to hydrogen sulfide,the volume ratio of the gassample to the carrier gas being 1:10.The hydrogen sulfide formed is first absorbed bysodium hydroxide solution and then determined after the addition of mercury fluo-rescein by measuring the extent of depression of the fluorescence.This method is foundto be simple,facile and rapid.Each detemination requires about 20 minutes.Due toits wide measurement range and high sensitivity,amount of sulfur within the rangeof 0.02~1000ppm may be accurately de,trained.The perceive of average deviationis less than 15% for sulfur below 1 ppm level.

本文设计用铂催化氢解,荧光光度法测定天然气中的微量硫。在900℃温度下,氢气与样气比为10:1时,有机硫经铂催化氢解为硫化氢,以氢氧化钠溶液吸收后,再加入荧光素汞进行荧光光度测定,此法设备简单、操作方便、测量迅速,20分钟可完成一次分析,测量范围宽、灵敏度高,可准确测量0.02~1000ppm的硫,1ppm以下测定的相对误差不大于15%。

 
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