Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
Arabic
English
Greek
Italian
Japanese
Norwegian Bokmål
Polish
Russian
Swedish
Terms
for subject
Physics
containing
封
|
all forms
Chinese
English
封
闭壳层
completed shell
封
闭系
closed system
封
闭系统
closed system
Get short URL