Chinese

edit
to seal; to close; to seal off
to seal; to close; to seal off; to close down; to seal up
 
system; operating system
trad. (封閉系統) 封閉 系統
simp. (封闭系统) 封闭 系统

Pronunciation

edit

Noun

edit

封閉系統

  1. (physics) closed system