对中国理论界关于循环经济的概念、意义、研究现状、技术领域、政策等方面的观点进行了述评。
A review has been made on viewpoints concerning the concepts, meaning, current situation of study, technical fields, policies, etc. of circulation economy.
第一部分是循环经济相关文献述评。
The first part is related to recycling economy literature review.
包络定理是微观经济学中的一个重要定理。本文对这一定理进行了述评。
The Envelope Theorem is an important theorem in microeconomics. We comment on this theorem in the paper.
对目前运行中的三种简易碱回收方法了述评，指出一级浓缩燃烧法是能够正常、稳定、经济运行的好方法。
Three simple recovery processes of alkali in small-scale paper mill are evaluated, and single-stage condensation-combustion process is stabler and more economic.
对目前运行中的三种简易碱回收方法了述评，指出一级浓缩燃烧法是能够正常、稳定、经济运行的好方法。
Three simple recovery processes of alkali in small-scale paper mill are evaluated, and single-stage condensation-combustion process is stabler and more economic.
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