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| 基本轨 | |||
| 尖轨前基本轨长; 普通铁轨; 备用铁轨材料; 转辙器的基本轨 | |||
| 转辙器的本轨 | |||
| stock rail: 9 phrases in 3 subjects |
| Metallurgy | 2 |
| Rail transport | 2 |
| Technology | 5 |
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