efficiency factor
in time
| efficiency factor | |
| math. | عامل الكفاءة |
| |||
| عامل الكفاءة | |||
|
efficiency factor : 1 phrase in 1 subject |
| Telegraphy | 1 |
| efficiency factor | |
| math. | عامل الكفاءة |
| |||
| عامل الكفاءة | |||
|
efficiency factor : 1 phrase in 1 subject |
| Telegraphy | 1 |