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| 打桩应力 | |||
| 驱动应力; 打樁應力 | |||
| 桩打入地下时的冲击应力; 沉桩应力 | |||
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driving stress : 4 phrases in 3 subjects |
| Bridge construction | 2 |
| Oil / petroleum | 1 |
| Technology | 1 |
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