| |||
inspection well; manhole | |||
conduit pit | |||
inspection shaft | |||
well chamber (室) | |||
| |||
inspection well | |||
| |||
inspection shaft |
检査井 : 23 phrases in 8 subjects |
Agriculture | 1 |
Architecture | 1 |
Construction | 1 |
Ecology | 2 |
Electronics | 2 |
Engineering geology | 1 |
General | 1 |
Technology | 14 |