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| 异向双开岔道 | |||
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| 单式不对称道岔 | |||
| 单式不对称道岔【铁】; 异向双开岔道【铁】 | |||
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| 单式不对称道岔【铁】; 异向双开岔道【铁】 | |||
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unsymmetrical double-curve turnout : 3 phrases in 1 subject |
| Technology | 3 |
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