 |
| |||
| 闸门导轨 | |||
| 闸栅式安全保护装置; 门式安全装置; 保护栅 | |||
| gate guard: 21 phrases in 8 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Bridge construction | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 3 |
| Space | 1 |
| Technology | 7 |
| Water resources | 2 |
|
| |||
| 闸门导轨 | |||
| 闸栅式安全保护装置; 门式安全装置; 保护栅 | |||
| gate guard: 21 phrases in 8 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Bridge construction | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 3 |
| Space | 1 |
| Technology | 7 |
| Water resources | 2 |