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71. | drainage outlet |
| 排水出口 |
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72. | impeded drainage |
| 不良排水 |
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73. | scheme for irrigation and drainage |
| 排水计划 |
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74. | displacement mass |
| 排水质量 |
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75. | Volume of Displacement |
| 排水容积 |
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76. | drainage by interception |
| 截流排水 |
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77. | right of drainage |
| 排水权 |
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78. | displaced weight |
| 排水重量 |
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79. | dewatering excavatio |
| 排水开挖 |
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80. | division of drainage area into districts |
| 排水分区 |
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