《化学工程与工艺专业英语》最全翻译最新整理(共91页).doc

精选优质文档-倾情为你奉上化学工程与工艺专业英语最全翻译最新整理专心-专注-专业 作者： 日期：Unit 1 Chemical Industry化学工业1.Origins of the Chemical Industry Although the use of chemicals dates back to the ancient civilizations, the evolution of what we know as the modern chemical industry started much more recently. It may be considered to have begun durin