|
1706| 0
|
MT/T 521-2006 煤礦坑道鉆探用常規(guī)鉆桿PDF |
| ||
小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1，京ICP證050210號，浙公網(wǎng)安備33038202004372號 )
GMT+8, 2025-5-3 11:49 , Processed in 0.056034 second(s), 17 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.
發(fā)表于 2010-3-14 20:21:58
QQ好友和群
收藏
淘帖
問題專業(yè)，描述清楚
伸手黨/灌水/看不懂