霍沃斯先生将在水力压裂法和其它非传统天然气开采技术中返排和钻出过程中所泄露的甲烷包含在了其计算中。
Mr. Howarth included methane losses associated with flow-back and drill-out processes in hydraulic fracturing and other unconventional gas drilling techniques.
而目前压裂液返排的研究主要集中在定性分析上，很少有定量的计算。
Flow back of fracturing fluid is currently focus on qualitative analysis, there are few quantitative calculations.
理论上琥珀酰胆碱由于增加胃内压，存在返流胃液及胃内容物的危险。
There is a theoretical risk of the aspiration of gastric fluid and contents with the increased intragastric pressure associated with the administration of succinylcholine.
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