re-vampingBNC¹²⁶⁴¹⁶⁺⁴ 基本例句 vt.修补；翻新；修改；n.改进；换新鞋面原型re-vamp的现在分词 This paper analyzed the revamping of ethylene plants in YAN- SHAN Petro-chemical Inc. and that abroad, the economic scale and the ways of re-vamping in ethylene plant are also discussed. 本文分析了国外以及燕山石化公司乙烯装置的技术改造，论述了乙烯装置改造的经济规模及其途径。 chemyq