这小段话该如何理解? system inertizing, performed with an inert gas, typically nitrogen must be completed immediate d ly before any line or any equipment can enter into service. the objective is to reduce the oxygen and to some degree water vapor concentrations before process gases can be introduced. underlined section 1：管线或设备在氮气置换一结束就投运。 underlined section 2:（目的是在引入工艺气体之前）降低氧含量并且在某种程度上降低水汽含量。 ------------------------fyi查看更多
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