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波纹钢管
| 地道
| 波纹钢管 | |
| met. | corrugated steel pipe |
| 地 道 | |
| met. | under-pass |
| tech. | underground passage; underground passageway |
| 地道 | |
| bridg.constr. | underground passage; tunnel under ground |
| hydroel.st. | subway; underpass |
| met. | gallery |
| tech. | undercrossing |
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| corrugated steel pipe | |||
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波纹钢管 : 5 phrases in 1 subject |
| Technology | 5 |
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