| |||
under cutting of track; under culling of track | |||
lowering of track; track lowering; undercutting of track; track depress ion |
落道 : 59 phrases in 14 subjects |
Air defense | 1 |
Aviation | 9 |
Earth sciences | 1 |
General | 3 |
Hydroelectric power stations | 2 |
Metallurgy | 2 |
Nautical | 2 |
Plastics | 1 |
Rail transport | 2 |
Skydiving | 2 |
Space | 6 |
Technology | 26 |
Textile industry | 1 |
Wind Energy | 1 |