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| delta-delta connection; △-△connection | |||
| 三角形-三角形接线: 25 phrases in 10 subjects |
| Automated equipment | 1 |
| Construction | 1 |
| Electronics | 4 |
| General | 2 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Rail transport | 4 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 6 |
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