The assessment was based on different production technologies of the natural gas-based DME and coal-based DME and combined with vehicle data.
评估中，根据了煤基和天然气基二甲醚的不同生产工艺，结合了车辆数据。
The oil giant made a big bet on the domestic natural gas market late last year buying Texas-based XTO Energy for billion.
这家石油巨头去年看好国内天然气市场，于年底以410亿美元收购了德克萨斯州的XTO能源公司。
But the cleanliness of natural gas is largely based on its lower carbon dioxide emissions when burned.
但是天然气的清洁特性主要是基于其在燃烧时较低的二氧化碳排放量。
America has abundant natural gas reserves, and he wants natural gas to replace petroleum-based vehicle fuels.
美国具有丰富的天然气藏量，他计划用天然气来取代基于石油的车辆燃料。
The $6.5 billion loss incurred last month by Amaranth Advisors, a Connecticut-based fund that took bad bets on natural gas, reopened the regulation debate in America's Congress.
而上个月康涅狄格州的大型基金AmaranthAdvisors由于在天然气上做错了方向，从而导致了65亿美元的损失，这重新引发了美国国会加强对冲基金管制的讨论。
Based in Jiangsu province, the company makes casing, tubing and drill pipes for the oil - and natural-gas-exploration industry.
WSP总部位于江苏，主要生产油气勘探行业所用的套管、油管和钻杆。
The second important structural change is the structure of energy shifted from conventional coal-based to more clean energy consumption, including natural gas, wind, solar.
第二个重要的结构性变化是能源结构将从以常规煤炭为主转向更多地消费清洁能源，包括天然气、风能、太阳能。
The model is based on the unique of natural gas in its migration, accumulation and preservation.
这一模型是根据天然气在运移、聚集和保存过程中的特殊性建立的。
According to the content of H2S, CO2 and organic sulfur compound in Chinese natural gas, discussed the general principle of formula selection based on the condition of raw gas.
并按我国天然气中H2S、CO2和有机硫化合物的含量情况，讨论了根据原料气条件选择配方的总体原则。
Genetic algorithms (GAs) are search algorithms based on of natural evolution processing including selection, mutation and crossover operations on the genes of individuals or potential solutions.
遗传算法是一种借鉴生物界自然选择和自然进化机制的搜索方法，通过对个体进行复制、交叉、变异操作完成搜索过程。
Based on the special requirements towards catalyst for converting natural gas to city gas intermittently, the development of corresponding catalyst is conducted.
基于天然气间歇转化制城市燃气对催化剂的特殊要求，开展了相应催化剂的研究制备工作。
Based on reliability analysis of natural gas boosting system and taking the volume, weight, and total cost as the constraints, the system reliability was optimized.
以天然气增压系统的可靠性分析为基础，在体积、重量和总费用的约束条件下，通过优化设计使整个系统的可靠度最高。
Based on the elastic stress analysis, the stresses of the hoop fiber reinforced steel pressure vessels (compressed natural gas bottle) under internal pressure are obtained.
用弹性理论分析方法，得到了环向纤维增强钢压力容器(压缩天然气气瓶)在内压作用下的应力。
Based on calculation of reserves value with cost method, this paper firstly proposes value evaluation model for natural gas reserves (composite model of surplus profit).
在成本法计算储量价值的基础上，首次提出了天然气的储量价值评估模型(超额收益综合模型)。
Based on the characteristics of carbon isotope and components of gas in this field, it is believed that the gas is unlikely a mixture of biogas and the lower thermogenesis natural gas.
基于该气田天然气的组成和碳同位素特征认为，该气田的天然气也不可能是生物气与下部热成因天然气混合的产物。
The natural gas combustion and utilization process is evaluated based on the optimized simulation.
在优化模拟的基础上对天然气燃烧利用过程进行了评估。
Based on analysis of various factors affecting solubility of natural gas in formation water, the necessary geological conditions for releasing water soluble gas was studied.
在研究影响天然气在地层水中溶解能力各种因素的基础上，分析了造成水溶相天然气释放的地质条件。
The process of feed gas reforming adopted in ammonia plant based on natural gas is directly rela-(ted) to cost and power consumption.
以天然气为原料造气生产合成氨，其生产工艺的选用直接影响着合成氨成本和能耗的高低。
Corresponding measures to improve internal corrosion prevention of natural gas pipeline are presented based on the analytical results.
根据分析得到的结果提出了相应的改进天然气管线防腐方法及措施。
This paper presents the change of interlock and its application, based on the revamp of natural gas interlock design.
以天然气的联锁设计改造为主介绍连锁变更及应用。
The fault diagnosis system of natural gas pipe network based on GIS is composed of the basic function subsystem, comprehensive analysis subsystem and fault diagnosis subsystem.
基于GIS的天然气管网故障诊断系统由基本功能子系统、综合分析子系统以及故障诊断子系统组成。
This article, based on the demand of the Shanghai natural gas market, analyses town gas peak-shaving.
根据上海市天然气各阶段需求量的预测，作者分析了上海城市燃气的调峰。
This paper analyses the appliance foreground of lined rock caverns(LRC) based on starving for the natural gas stored underground in China.
根据我国对石油天然气地下储备的急需，分析内衬岩洞储气库的应用前景。
Based on the analysis and study of the several fire protection problems in storage and distribution station of natural gas, the paper provides some corresponding countermeasures.
本文通过对天然气储配站若干消防问题进行分析和探讨，提出了相应的消防对策。
Let the price of gas go freely based on western developed countries' experience on controlling natural gas.
根据西方发达国家在天然气管制方面的经验，放开天然气价格对天然气工业是利大于弊的。
Based on historical data of Shaanxi natural gas network system, static and dynamic simulation and load forecasting of natural gas system has been researched in this thesis.
本文依据陕西省天然气管网系统的历史数据，对天然气管网系统稳动态仿真和天然气短期负荷预测进行了研究。
For example, a typical natural gas futures contract is a financial instrument based on the value of about 10 million cubic feet (Mmcf) of natural gas.
例如，一个典型的天然气期货合约是金融工具的约10万美元(立方英尺)的天然气立方英尺价值为基础。
Finally, based on SCADA system a plan, to detect and locate the long natural gas pipeline leakage, is proposed in the paper.
最后，本文基于SCADA系统，提出了天然气长输管道的泄漏监测与定位系统的构建方案。
Finally, based on SCADA system a plan, to detect and locate the long natural gas pipeline leakage, is proposed in the paper.
最后，本文基于SCADA系统，提出了天然气长输管道的泄漏监测与定位系统的构建方案。
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