这段话应该怎么翻译？关于烷基化反应器？ either upon completion of reactor filling or when the alkylation reactor system is already running with ethylene feed bypassing the treater (i.e., when the treater media is being replaced). the object is to avoid completing the ethylene fill step and then not being able to switch to ethylene feed flow to the alkylation reactor system. 前一句好像不全，楼主用“即”是对前面的解释吧： 试译：……即在反应器填充结束时或乙烯进料走处理器旁通条件下烷基化反应器运行时（例如处理器更换介质时）。目的是避免出现乙烯填充阶段完成后不能将乙烯进料切换至烷基化反应系统。查看更多
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