1、当您付费下载文档后，您只拥有了使用权限，并不意味着购买了版权，文档只能用于自身使用，不得用于其他商业用途（如 [转卖]进行直接盈利或[编辑后售卖]进行间接盈利）。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。
3、如文档内容存在违规，或者侵犯商业秘密、侵犯著作权等，请点击“违规举报”。
碎片内容
Unit 3 Typical Activities of Chemical EngineersThe classical role of the chemical engineer is to take the discoveries made by the chemist in the laboratory and develop them into money--making, commercial-scale chemical processes. The chemist works in test tubes 试管 and Parr bombs with very small quantities of reactants and products (e.g., 100 ml), usually running “batch 间歇的 ” constant-temperature experiments. Reactants are placed in a small container in a constant temperature 恒温的 bath. A catalyst is added and the reactions proceed with time 随着时间的推进继续进行.
以上为全文约 33% 的内容，完整文档共 1,681 字，需下载原文件查看：https://www.zhijidoc.com/p-384005.html
