friendly state meaning in Chinese

友好国家

Abstract : the leather manufacture process is separated into five stages , including raw hide preservation , beamhouse , tanning , post - tanning treatment and finish , from raw hide to leather . then the classical processing techniques and the problem substances generated in that are introduced . the enviromentally friendly state - of - the - art techniques used in leather production are put forward at last
文摘:从生态学方面讨论了皮革生产的可持续发展问题.制革生产过程可分为:原皮保存、准备工段、鞣制、鞣后处理和涂饰五个部分.以此为纲,本文概括了传统制革工艺,讨论了在皮革生产过程中可能出现的不利于环境保护的因素.针对这些问题提出并简要介绍了制革清洁化技术的应用