| 释义 |
- un.底道坑；下部平巷；底导洞法
- 网络底导坑；底部导坑
1. | 底导坑 矿业英语 - 豆丁网 ... bottom gate 底 导坑 bottom heading 底导坑 bottom hole 底部炮眼 ... www.docin.com | 2. | 底部导坑 http://www.ptsgi.com/chines... ... "底架钣"," Steel deck" "底部导坑"," Bottom heading" "底钣,底座,支承顶钣"," Sole plate" ... www.guandang.com |
释义: 底道坑,下部平巷,底导洞法,底导坑,底部导坑 |