plant expansion短语¹⁴⁴⁹⁷²⁺² 基本例句 企业扩大 Object and bottle necks were analyzed for chemical plant retrofit. The relationship between object and bottle- necks in the process of plant expansion and revamping was related. 对化工装置扩建改造的目标与瓶颈进行了分析,阐述了目标与瓶颈在扩建改造过程中的相辅相成关系。 cnki