| |||
| 型钢框架 | |||
| |||
| 三段式定子机座 | |||
|
section frame : 17 phrases in 4 subjects |
| Automobiles | 2 |
| Bridge construction | 1 |
| Shipbuilding | 2 |
| Technology | 12 |
| |||
| 型钢框架 | |||
| |||
| 三段式定子机座 | |||
|
section frame : 17 phrases in 4 subjects |
| Automobiles | 2 |
| Bridge construction | 1 |
| Shipbuilding | 2 |
| Technology | 12 |