天然气

At least 3 people are recovering after a serious of explosion that Dallas facility selling gas canister.

在达拉斯一起严重的天然气库爆炸事件中，至少已有3位人员正在康复之中。

In the event, the two countries cantankerously[5] reached a deal on an increased gas price just before their New Year's Eve deadline.

结果是，新年之前的最后一天，两国一边还闹得不可开交，一边却就天然气涨价达成了一致。

In the event, the two countries cantankerously[5] reached a deal on an increased gas price just before their New Years Eve deadline.

结果是，新年之前的最后一天，两国一边还闹得不可开交，一边却就天然气涨价达成了一致。

This standard is applicable to casing running operations in oil and gas well.

本标准适用于石油、天然气钻井的下套管作业。

Key Laboratory of Catalysis of CNPC, University of Petroleum, Beijing 102200, China

石油大学中国石油天然气集团公司催化重点实验室，北京 102200

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

None dared to go down there because the cavern was filled with gas.

谁都不敢下去，因为巨大的洞窟里面充满了天然气。

In this paper,starting with the concept of risk,trying to take the theory of probability,central limit theorem,definition of optimal statistic estimate and economic theory as the basis and according to the concrete situation of the natural gas exploration project,the formula to quantitatively determine the risk is derived.

文章从"风险"的概念入手，尝试以概率论、中心极限定理、最优统计估计量的定义和经济理论为基础，结合天然气勘探项目的具体情况，推导出了定量测定风险的公式。

For the last two centuries we have been using more and more coal, oil and gas.

过去两个世纪，我们对煤、油和天然气的使用越来越多。

China petrochemical (600028): The company world-class scale's integrated energy chemical industry company, is Chinese first in Hong Kong, New York, London, the Shanghai four place going on the market company, is also the upstream, the middle reaches, the downstream synthesis integration energy chemical industry company; Is China biggest To be listed; Is also Chinese and the Asian biggest petroleum and petrochemical companies one of; Chinese and Asian biggest gasoline, diesel oil, jet fuel and other main petroleum product one of producer and distributors; The Chinese second big petroleum and natural gas producer.

中国石化(600028)：公司世界级规模的一体化能源化工公司，是中国首家在香港、纽约、伦敦、上海四地上市的公司，亦是上、中、下游综合一体化的能源化工公司；是中国最大的上市公司；也是中国及亚洲最大的石油和石化公司之一；中国及亚洲最大的汽油、柴油、航空煤油及其他主要石油产品的生产商和分销商之一；中国第二大石油和天然气生产商。

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。