close system

US 
UK 
  • un.封闭体系
  • Web封闭系统;密闭系统;封闭式系统
un.
1.
封闭体系

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard