Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
多次关井器【阀】
mining.
multi-shut-in tool
;
multiple-shut-in tool
多次
井底
关井器
mining.
multiple operation shut-in tool
多次关井器
oil
multi-shut-in tool
Add
|
Report an error
|
Get short URL
|
Language Selection Tips