1.
When electrical parameter is changd by wet tunnel wall, electromagnetic wave propagation attenuation will vary.
矿井隧道壁湿润会引起电参数改变，从而使电磁波传播衰减率发生变化。
2.
open a mine, well, tunnel, etc
开矿、 打井、 凿隧道
3.
a secondary mine passageway between two main shafts or tunnels.
矿井中连接两条大隧道的小巷道.
4.
Research on the radio wave propagation at 2.0 GHz in coal mine tunnels
2GHz无线电波在煤矿井下隧道传播的研究
5.
Research on Underground Coal Mine Fable Tunnel Over-temperature Warning System Based on ARM
基于ARM的煤矿井下电缆隧道超温预警系统的研究
6.
dig a pit, tunnel, shaft, etc
挖坑、 隧道、 升降井等.
7.
To dig a mine or tunnel beneath.
在下面挖矿或挖隧道
8.
An excavation in the earth from which ore or minerals can be extracted.
矿，矿井采掘矿石或矿物的地下坑道
9.
The main level of a mine.
主坑道矿井的主要位置
10.
tunnel a hole, shaft, passage, etc
挖掘洞穴、 矿井、 通道等.
11.
The 3# Ventilation Shaft back well method Construction Technology of Qinling Zhongnanshan Highway Tunnel
秦岭终南山公路隧道3#竖井反井法施工技术
12.
Scheme Analysis of Reconstructing Underground Water Channel Working Shaft into Water Collecting Well
引水隧道施工井改造为集水井方案分析
13.
Anti-well construction technique of 3# shaft of Zhongnanshan road tunnel in Qinling
秦岭终南山公路隧道3号竖井反井法施工技术
14.
Seismic Response Analysis of Shaft for Nanjing Changjiang Immersed Tube Tunnel
南京长江沉管隧道竖井地震反应分析
15.
Study on Reflected-Wave Tunnel Seismic Prediction;
反射波法隧道、井巷地震超前预报研究
16.
Research on the Highway Tunnel Rapid Construction Management Using the Inclined Shaft
公路隧道利用斜井快速施工组织研究
17.
Construction in Slip-form of Shaft No.2 in the Qinling Zhongnanshan Highway Tunnel
秦岭终南山公路隧道2#竖井滑模施工
18.
Analysis on Deep Radioactivity Logging of Railway Tunnels as Well as Assessment
铁路隧道深孔放射性测井分析及评价