 |
| |||
| 坞门等的底部止水条封封缄 (闸门) | |||
| 封底 | |||
| 底部封闭; 底止条; 底部止水条封 | |||
| bottom seal: 4 phrases in 4 subjects |
| Automobiles | 1 |
| Hydroelectric power stations | 1 |
| Rail transport | 1 |
| Technology | 1 |
|
| |||
| 坞门等的底部止水条封封缄 (闸门) | |||
| 封底 | |||
| 底部封闭; 底止条; 底部止水条封 | |||
| bottom seal: 4 phrases in 4 subjects |
| Automobiles | 1 |
| Hydroelectric power stations | 1 |
| Rail transport | 1 |
| Technology | 1 |