Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
Russian
G
o
o
g
l
e
|
Forvo
|
+
to phrases
煤级
oil
coal rank
煤
分
级
tech.
grade of coal
煤级
:
81 phrases
in 8 subjects
Coal
1
Electronics
1
Explosives and Explosive Ordnance Disposal
1
General
14
Geology
2
Metallurgy
12
Oil / petroleum
10
Technology
40
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">
Add
|
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">
Report an error
|
Get short URL
|
Language Selection Tips