一句英文不知道什么意思，求助？ block in the psv bypass and stop the nitrogen purge. double block and bleed the psv and the bypass line then chain lock its block valves and the bypass valve closed. 关闭psv系列安全阀旁路并停止氮气吹扫。关闭2个截止阀并且开启泄放阀，然后用链锁把这2个截止阀和旁路阀锁住。 查看更多
工艺物性表中的英文？ 可以呀。 混合气体的摩尔质量等于每种气体的摩尔质量x该气体在混合气体中的摩尔比的总和。 the average molar mass of a mixture of gases is equal to the sum of the mole fractions of each gas (xi) multiplied by the molar mass (mi) of that particular gas: . source: boundless. “molar mass of gas.” boundless chemistry. boundless, 20 may. 2016. retrieved 24 may. 2016 from https:///chemis ... ss-of-gas-259-1899/ 查看更多
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