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| 51. | selective excavation |
| 选择挖掘 |
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| 52. | excavating plough |
| 挖掘犁 |
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| 53. | excavator factor |
| 挖掘系数 |
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| 54. | To dig trenches |
| 挖掘堑壕 |
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| 55. | excavating equipment |
| 挖掘设备 |
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| 56. | to dig new channels |
| 挖掘新道 |
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| 57. | excavation deformation |
| 挖掘错动 |
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| 58. | To dig a sap. |
| 挖掘坑道 |
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| 59. | digging efficiency |
| 挖掘效率 |
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| 60. | excavated surface |
| 挖掘表面 |
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