天然气

It is a comprehensive evaluation index for the seal ability of mudstone caprock to gas in water-dissolving phase.

评价结果与该区西部天然气相对富集的地质条件吻合，这表明该方法用于泥质岩盖层对水溶相天然气封闭能力的综合评价是可行的。

It is a comprehensive evaluation index for the seal ability of mudstone caprock to gas in waterdissolving phase.

评价结果与该区西部天然气相对富集的地质条件吻合，这表明该方法用于泥质岩盖层对水溶相天然气封闭能力的综合评价是可行的。

To solve the problems that cyclic variation is high in low power output and NOx emission is high in high power output in compression ignition engine with compressed natural gas direct injection,a swirl chamber combustion system with glow plug ignition was developed.

针对缸内直喷压燃式天然气发动机低负荷循环波动大及高负荷NOx排放偏高的问题，设计开发了涡流室式热面点火燃烧系统，研究了涡流室通道尺寸对缸内天然气空气混合气形成、着火燃烧及发动机运转特性的影响。

Naturalgas was first used in America for lighting in 1816, it has grown inimportance for use in homes, industry, and power plants, but naturalgas production reached its US peak in 1973, and the price has risensignificantly since then.

天然气是在美国首次使用在1816年用于照明，它的重要性增加，用于家庭，工业和发电厂，但天然气产量达到了美国在1973年高峰期，价格大幅上升从那时起。

A tracking study was carried out on the developing progress and trend of the ISO Upstream NaturalGas Technical Committee （ISO/TC193/SC3）, the organization and the structure of which were introduced in detail.

为此，对国际标准化组织天然气技术委员会天然气上游领域分委会ISO/TC 193/SC3的标准化发展动态进行了跟踪研究。

The ISO working progress should be highly concerned; b. More experts should be recommended to work in the national standardization group focusing on the latest development of the ISO Upstream NaturalGas Technical Committee; c. The relevant scientific research and unique techniques should be developed so as to set foot in the ISO NaturalGas Committee in the future.

提出了在我国天然气上游领域的标准化工作中应积极跟踪ISO项目进展，推荐专家参与ISO项目工作，开展相关科学研究，形成专有技术等几点建议，为尽快完善我国天然气上游领域标准奠定基础。

The paper commencing with analyses of the basic property of the hydrate, structure and sort, analyzes micro kinetics, formation condition, gas hydrate formation mechanism and influencing factor in high sulfur; also proceed analysis in depth for existent hydrate prediction model; according to gas dissolving, hydrate lattice deformation, synergistic action of inhibitor, carry out analytical study for existent error between normal forecast model and physical condition; introduce key parameter theory to establish and modify prediction model of hydrate formation condition to suit for high sulfur gas reservoir and inhibitor system, analyses different kinds of prevention and cure measures to influence of hydrate; finally, through field application in high sulfur gas reservoir hydrate.

本文从分析水合物的基本性质、结构与分类出发，分析了水合物生成过程中的微观动力学、生成条件、高含硫天然气水合物生成机理以及影响因素；并对现行的水合物预测模型进行了深入剖析，根据气体溶解、水合物晶格变形、抑制剂协同作用等因素对常规预测模型与实际条件之间存在的误差进行了分析研究；通过引入关键参数理论，建立并改进了适合高含硫气藏水合物生成条件预测模型及抑制剂体系的高含硫水合物生成条件预测模型，分析了各种防治措施对水合物的影响；最后通过高含硫气藏水合物实例计算，分析了含硫化氢、二氧化碳组分的天然气与常规气体对水合物生成条件的影响，并对各种水合物防治措施进行了实例计算。

MPG:The NPG pressure regulating station is located to the north of the Park,to provide natural gas for living and productaion through pipelines already lay out

天然气：基地北侧有一座天气调压部，天然气管线已敷设在基地主干道上，可保证入驻企业的生产、生活用气

As the preferentially recommended odorant of the new generation, THT took the place of ethanethiol as the odorant for nature gas by Beijing Natural Gas company in 1996. Due to the relatively short history and low production level of THT in China, little research has been done on it.

四氢噻吩作为在国际上被推荐首选使用的新一代燃气加臭剂，北京市天然气公司于1996年将天然气中的加臭剂由乙硫醇改为四氢噻吩，但中国由于采用四氢噻吩的时间比较晚，且因为四氢噻吩的生产在国内比较少，所以针对四氢噻吩的研究比较缺乏。

Until now, it has the most industrialized future with iodine as a catalyst system in oleum in the liquid phase of partial oxidation of methane reaction.

甲烷部分氧化反应是天然气直接转化制备高附加值化工原料的重要途径，它对于天然气资源的综合利用具有重要意义。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。