| |||
ballast | |||
ballast bed; road bed; track bed | |||
roadbed | |||
bed | |||
| |||
track bed | |||
| |||
ballast bed | |||
| |||
ballast bed |
道床 : 161 phrases in 13 subjects |
Agriculture | 2 |
Automobiles | 2 |
Bridge construction | 9 |
Business | 1 |
Construction | 1 |
Desert science | 1 |
Electronics | 1 |
Engineering geology | 1 |
General | 1 |
Metallurgy | 4 |
Otorhinolaryngology | 2 |
Rail transport | 35 |
Technology | 101 |