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| 钻孔灌注桩; 钻孔桩 | |||
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| 钻孔灌注桩; 钻孔桩; 鑽孔場鑄樁 | |||
| bored cast-in -place pile: 3 phrases in 2 subjects |
| Bridge construction | 2 |
| Technology | 1 |
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