Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
Finnish
French
German
Greek
Italian
Portuguese
Russian
Spanish
Swedish
Ukrainian
G
o
o
g
l
e
|
Forvo
|
+
to phrases
back bonding
chem.
反馈键
back bonding:
2 phrases
in 1 subject
Chemistry
2
Add
|
Report an error
|
Get short URL
|
Language Selection Tips
