 |
| |||
| rang d'un harmonique; ordre d'un harmonique | |||
| ordre harmonique | |||
| rang d'un harmonique | |||
| rang harmonique | |||
| harmonic: 27 phrases in 9 subjects |
| Communications | 2 |
| Earth sciences | 2 |
| Electric traction | 1 |
| Electronics | 14 |
| Gear train | 1 |
| Mechanic engineering | 1 |
| Scientific | 2 |
| Technology | 3 |
| Transport | 1 |