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specialty gas 强调
技术	газ специального назначения (proz.com twinkie); специальный газ (praxair.com twinkie)
英语 词库
specialty gas
石油和天然气技术	'any gas that's tested for purity after the cylinder is filled (Yuri Ginsburg); hat can include pure gases like nitrogen, oxygen, and argon, or custom gas blends" (Yuri Ginsburg)