 |
столбовая система
| выемки угля
| столбовая система | |
| geol. | panel system |
| mining. | semilongwall |
| выемка угля | |
| geol. | coal getting |
| mining. | coal pulling; hewing; coal winning |
| nat.res. | coal mining |
| |||
| panel system | |||
| semilongwall | |||
| pillar mining | |||
| столбовая система: 155 phrases in 7 subjects |
| Geology | 9 |
| Gold mining | 2 |
| Makarov | 1 |
| Mining | 126 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Technology | 14 |