The circulating recovery ground flow can reuse circulation medium, especially for nitrogen and natural gas, the corresponding cost, risk and the extent of environment poll...
可循环回收地面流程能够将循环介质，特别是氮气和天然气重复再利用，能够大大节约成本，减少环境污染，降低风险。
Ecosystems thus involve the circulation, transformation, and accumulation of energy and matter through the medium of living things and their activities.
因此，生态系统以生物及其活动作为媒介，涉及能量和物质的循环、转化和积累。
The newspaper is an ideal medium for most retailer s. its circulation area generally conforms to the retail trading area.
报纸是大多数零售商的理想广告媒体，其发行地域大体与零售商业务地域一致。
应用推荐