inactive gas
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对设备抽真空,然后充入不活泼气体,如氮。
Evacuate the equipment and break vacuum with an inert gas, such as nitrogen.
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由于干燥的二氧化碳是相对不活泼的气体,不要求特殊的建材。
Since dry carbon dioxide is a relatively inert gas, special materials of construction are not required.
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