兰州交通大学：《环境保护与可持续发展》课程教学资源（PPT课件）课程介绍（负责人：陈学民）

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A trickling filter is a nonsubmerged fixed-film biological reactor using rock or plastic packing over which wastewater is distributed continously

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通过本章的学习,认识环境经济学形成与发展的时代背景,理解环境经济学 的研究对象及其主要内容,掌握环境资源配置的特殊性和环境经济学的特点

Evolution of Attached Growth Processes Attached growth processes can be grouped into three general classes: (1) nonsubmerged attached growth processes, (2) suspended growth processes with fixed-film packing, and (3) submerged attached growth aerobic processes

《环境科学概论》课程教学资源（文献资料）Growing greenhouse gas emissions due to meat production