| |||
| 通断电流 | |||
| 断续电流 | |||
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make-and-break : 52 phrases in 14 subjects |
| Architecture | 1 |
| Aviation | 2 |
| Drilling | 6 |
| Earth sciences | 1 |
| Electronics | 5 |
| Exhibitions | 1 |
| General | 4 |
| Geophysics | 1 |
| Oil / petroleum | 3 |
| Sealing | 2 |
| Space | 3 |
| Technology | 18 |
| Telecommunications | 4 |
| Textile industry | 1 |