mechanical efficiency
| log
| mechanical efficiency | |
| avia. | 力学效率 |
| busin. | 机器效率 |
| log | |
| gen. | 把...记入航海日志; 记录; 日志 |
| auto.ctrl. | 记日志 |
| hydroel.st. од. | 原木 |
| interntl.trade. | 工作时间表; 航海曰记 |
| met. | 日记 |
| sport. | 伐木 |
| |||
| 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 |