conservation of matter

英 美
  • 物质守恒
  • conservation n.保存;保护;守恒;节约
  • matter n.事情;事态;问题;关于...的事情;物质;重要性v.有关系;要紧
  • of prep.关于;...的(表所属);出身于;由于
Noun:
  1. a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system