| |||
| 力学效率 | |||
| 机器效率 | |||
| ★ 机械效率 | |||
|
mechanical efficiency : 10 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Electric machinery | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 3 |
| Nautical | 1 |
| Technology | 2 |
| |||
| 力学效率 | |||
| 机器效率 | |||
| ★ 机械效率 | |||
|
mechanical efficiency : 10 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Electric machinery | 1 |
| Geophysics | 1 |
| Hydroelectric power stations | 3 |
| Nautical | 1 |
| Technology | 2 |