| |||
driftway | |||
drift heading (洞) | |||
drift heading; exploring heading; pilot tunnel; pioneer tunnel | |||
heading; pilot | |||
advancing drift; approach pit; base tunnel; drift way; gallery | |||
| |||
heading | |||
| |||
heading | |||
| |||
approach pit | |||
| |||
pilot |
导坑: 122 phrases in 10 subjects |
Architecture | 1 |
Drilling | 1 |
Electronics | 1 |
Engineering geology | 13 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 3 |
Oil / petroleum | 1 |
Rail transport | 10 |
Space | 2 |
Technology | 89 |