Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
缺口弧长
缺口弧长 L 是包括定向窗口长度在内的缺口展开长度。根据工程经验,爆破缺口弧长应为:3/4 πD≧L >, 1/2πD,式中D为烟囱或水塔底部直径
expl.
gap arc length
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