The power and oil and gas sectors were the most frequently targeted.
电力、石油和天然气部门是最常被攻击的目标。
Moreover, because gas is frequently encountered in association with oil, the production, refinement, transportation, and storage of crude oil is also a source of methane emissions.
此外，由于天然气常与石油混在一起，原油生产、提炼、运输和储存也是一个甲烷排放来源。
Some creatures are part of food chains that begin with methane gas which seeps from the Earth's interior in particular places, frequently at the bottom of the sea.
有些生物存在于以甲烷为第一营养级的食物链中。甲烷是从地球内部可燃气体，通常在海底渗出。
The wait getting back into the U.S. at the border in Tijuana frequently takes longer than two hours and cars can burn about a gallon of gas for each hour they idle.
从提华纳过境凡返回美国通常需要等两个多小时，而每辆车每等一小时大概就要耗用1加仑的油。
Rectisol is therefore frequently used to purify shifted, partially shifted or unshifted gas downstream residue oil -, coal - or lignite gasification.
低温甲醇洗通常用于下游渣油、渣煤、褐煤气化工艺，净化变换、部分变换或未变换的气体。
The living room is the natural gas gathering place should be stable, should not be the living room planning in line, so that people walking too frequently.
客厅是聚集旺气的地方，应要求稳定，不应将客厅规划在动线内，使人走动过于频繁。
Most, but not all. Some creatures are part of food chains that begin with methane gas which seeps from the Earth's interior in particular places, frequently at the bottom of the sea.
绝大部分生物都是食物链中的一部分，它是以地球内部特殊部位缓慢渗出的甲烷为第一营养级，而这些气体经常在海洋底部出现。
The coal gas is the directly cause frequently taking place in calamity of the mine, but the coal gas was concerned as a kind of clean energy.
煤层气是矿井灾害频繁发生的直接原因，但是煤层气作为一种清洁能源备受关注。
The hostage-taking cases by using canned liquefied petroleum gas have happened for these years in our country frequently.
使用罐装液化气劫持人质案件，这几年在我国频频发生，因处置方法不当，曾造成严重后果。
With the frequently occurring of mine accidents the sensitivity of gas detectors is paid more and more attentions by people.
随着矿难地频频发生，瓦斯探测器的灵敏度越来越受到人们重视。
Their lives were frequently threatened by gas explosion.
他们的生命不断受到煤气爆炸的威胁。
It makes pipeline plugging happened frequently in Feng-15 gas well that the result of variety plugging material and elemental sulfur deposit in the surface gathering system.
通过室内研究和评价，选择有机化学清洗液对峰15井地面集输系统进行了化学清洗，取得显著应用效果。
The frequently-occurring positions, actual situation, causes and preventive measures, etc. of buried gas pipeline corrosion in Baoji City are indicated.
介绍宝鸡市埋地煤气管线腐蚀的多发部位、腐蚀现状、成因及防蚀措施。
Because of corrosion, Pinghu oil and gas field had to replaced seawater lift pump frequently since platform production.
平湖油气田投产至今，由于腐蚀破坏的原因，不得不对海水泵进行多次维修和更换。
It is one of nature's great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plants' leaves are bathed in a sea of nitrogen gas.
下述情形真可谓是自然界的一个莫大讽刺：土壤中能获得的氮肥量往往对植物的生长构成了一个上限，虽然植物的叶子被沐浴在一片氮气的海洋中。
At present, most coal mines in China are high gas concentration and caused the accidents occur frequently.
我国目前大部分煤矿属于瓦斯矿井，而由瓦斯浓度过高引发的安全事故频频发生。
Abstract: Casing failure occurs frequently during the hydraulic fracturing process of shale gas formation, which seriously influences the shale gas recovery efficiency.
摘要：在页岩气开采的水力压裂过程中，套损时有发生，严重影响页岩气开采效率。
Abstract: Casing failure occurs frequently during the hydraulic fracturing process of shale gas formation, which seriously influences the shale gas recovery efficiency.
摘要：在页岩气开采的水力压裂过程中，套损时有发生，严重影响页岩气开采效率。
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