Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
上半断面下部导坑掘进法
隧道开挖方法之一,即在全断面开挖过程中,遇到地质条件不稳定的岩层时,可采用上半断面和下部导坑同时爆破掘进的开挖方法施工
expl.
heading excavation method of lower part of upper half cross-section
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