现今世界上的资源越来越紧缺的情况下,节约资源是当今世界每个国家都在致力研究的问题,尤其是通过技术改进和升级实现节约资源、降本增效,避免资源的浪费,已成为一个刻不容缓的重要研究课题,在我国近几年也加大了对已有资源的节约研究。 In today’s world where resources are scarce, saving resources is a problem that every country in the world is trying to study. In particular, through technological improvements and upgrades, it saves resources, reduces costs and increases efficiency, and avoids the waste of resources. It has become an urgent and important research topic. In recent years, China has also stepped up its studies on the conservation of its existing resources.