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钢轨爬行
| 观测
| 钢轨爬行 | |
| bridg.constr. | rail creeping |
| 观测 | |
| gen. | viewing |
| geol. | survey |
| manag. | take sights |
| math. | observed |
| met. | inspect; inspection; scanning |
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| rail creeping | |||
| creep of rail; rail creep | |||
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钢轨爬行 : 2 phrases in 1 subject |
| Rail transport | 2 |
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