chemical process engineering是什么意思

chemical process engineering是什么意思 ENG 英语翻译The expansion of the chemical process industries on the one hand advances in the chemical and technical sciences and on the other hand have made it possible to lay theoretical foundations for chemical processing. process process. process. process. chemical bolt和chemical （1）meet to know to need a process mutually ,can producee.the chemical reaction.（2）love you really do not need the reason of 英语翻译The present invention pertains to multiple downcomer tray assemblies for chemical process columns.More particularly,one aspect of the invention includes a multiple downcomer tray assembly for a process column of the type wherein liquid fl chemical是什么意思 chemical-free chemical是什么意思 Chemical communications non-chemical 和chemical free 英语翻译The unit operations are as applicable to many physical processes as to chemical ones.Forexample,the process used to manufacture common salt consists of the following sequence of the unit operations:transportation of solids and liquids,tra 英语翻译Catalytic reforming is used in refining to improve the octane number of distillates in the gasoline boiling range,and in chemical manufacture for the production of aromatic hydrocarbons.The process was first used in reefing in 1940:it is 英语翻译Living things exist and reproduce because they contain macromolecules.Very early in the evolutionary process,the chemical (i.e.,nonreplicative)synthesis of large molecules under natural conditions provided a mechanism for the reproductive