Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
凿岩速率指数
凿岩速率指数是钻头穿孔速度的一个相对参考标准,所以并不是现场的绝对凿岩速率值
expl.
drilling rate index
;
DRI
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