Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
三氧化二铌
chem.
columbium sesquioxide
;
diniobium trioxide
met.
columbium sesquioxide
(Nb
2
O
3
)
;
niobium sesquioxide
(Nb
2
O
3
)
Add
|
Report an error
|
Get short URL
|
Language Selection Tips