The system usually operates with free collection of recycled waste, with the principle therefore being that 'the more you recycle, the less you pay'.
在该制度内，可回收垃圾的处理是免费的，也就是说该制度遵循的是“多循环，少交费”原则。
The principle, performance and the factors of new SCR De-NO_X technology as well as its real working system are introduced. Also the recycle method of its byproduct is involved in this paper.
介绍了S CR 系统脱硝新技术的原理、性能及其影响因素、实际的工艺系统及其副产品的回收方式等，为电厂进行改造提供一些指导。
The science popularization resource package of neutral water recycle in city was primarily designed by taking consideration of the designing principle, content and format.
前言： 从设计开发原则、内容和形式等方面思考，设计“城市中水回用”科普活动资源包。
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