The process of alkyl naphthalene preparation by alkylation, acylation and direct extraction are also discussed.
讨论了烷基化、 酰基化和直接提取制备烷基萘的工艺路线。
The paper puts forward a new watering regime of jigging process. It makes coal preparation plants with flotation shops adoptable to direct flotation.
本文给出的新的跳汰流程用水制度将会使所有设有浮选的选煤厂能采用直接浮选工艺。
The preparation method solves the problems that the preparation process of the traditional direct flame type solid oxide fuel battery pack is complex and has high cost.
它解决了现有直接火焰型固体氧化物燃料电池组的制备过程复杂，并且成本高的问题。
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