 |
| |||
| 弹簧支撑式推力轴承 | |||
| 水轮发电机的弹簧支撑式推力轴承; 弹簧推力轴承 | |||
| spring thrust bearing: 4 phrases in 2 subjects |
| Electric machinery | 3 |
| Hydroelectric power stations | 1 |
|
| |||
| 弹簧支撑式推力轴承 | |||
| 水轮发电机的弹簧支撑式推力轴承; 弹簧推力轴承 | |||
| spring thrust bearing: 4 phrases in 2 subjects |
| Electric machinery | 3 |
| Hydroelectric power stations | 1 |