单词	发达国
释义	发达国fādáguódeveloped nation
随便看	operation expression operation facility operation factor operation, fail-safe operation-- fast operation feature of nuclear power plant operation field operation field code operation flow chart operation flow sheet operation flowsheet operation form operation frequency operation guide binder operation-- hanford atomic product operation-- hot operation houndstooth theory operation id operation illustration operation indicator operation information system operation instruction operation instruction book operation instruction book--oib operation instruction book，oib