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| 就地灌注混凝土桩; 钻孔灌注桩 | |||
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| 钢筋混凝土桩 | |||
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| 高压蒸汽养护和应力混凝土 | |||
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| 桩 | |||
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| 预应力混凝土桩 | |||
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杭 : 207 phrases in 1 subject |
| Technology | 207 |
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