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| 61. | saline - alkali land drainage |
| 盐碱地排水 |
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| 62. | drainage mattress |
| 排水柴排 |
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| 63. | subsurface drainage |
| 浅地表排水 |
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| 64. | economic benefits of drainage |
| 排水经济效益 |
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| 65. | drainage sucker |
| 排水吸引器 |
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| 66. | drainage of forest land |
| 林地排水 |
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| 67. | drainage by open canal |
| 明渠排水 |
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| 68. | critical period of drainage |
| 排水临界期 |
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| 69. | drainage of embanked field |
| 圩田排水 |
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| 70. | management of drainage system |
| 排水系统管理 |
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