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| double-wire system; two-wire system; two wire system | |||
| dual-wire system | |||
| double trolley system | |||
| double wire system | |||
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双 线制 : 31 phrases in 10 subjects |
| Automobiles | 3 |
| Electric machinery | 1 |
| Electronics | 8 |
| General | 3 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Space | 3 |
| Technology | 9 |
| Telecommunications | 1 |
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