 |
| |||
| 冷藏设备保护装置和制冷试验 | |||
| refrigerating plant to be done protection device and cooling-down tests: 2 phrases in 1 subject |
| Shipbuilding | 2 |
|
| |||
| 冷藏设备保护装置和制冷试验 | |||
| refrigerating plant to be done protection device and cooling-down tests: 2 phrases in 1 subject |
| Shipbuilding | 2 |