 |
| |||
| 重力重心轴 | |||
| 重心轴; 重心轴线 | |||
| gravity axis: 8 phrases in 5 subjects |
| Automobiles | 1 |
| Bridge construction | 4 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Technology | 1 |
|
| |||
| 重力重心轴 | |||
| 重心轴; 重心轴线 | |||
| gravity axis: 8 phrases in 5 subjects |
| Automobiles | 1 |
| Bridge construction | 4 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Technology | 1 |