1·Self-management irrigation and drainage district;
自主管理灌排区；
2·In agricultural production, pump irrigation and drainage are the main machinery.
在农业生产中，泵是主要的排灌机械。
3·We acquired125000 h. p. of new pumps and other irrigation and drainage equipment.
我们得到期12。5万马力的新电泵和其他排队灌设备。
4·The best rice land is level, conveniently diked for alternating irrigation and drainage.
稻田最好是在平地上，筑田埂以利排灌。
5·Project post evaluation is an important part in irrigation and drainage project management.
大型排灌工程项目后评价是大型排灌工程项目科学管理的重要环节。
6·This view has some reference value to the adjusting method of the irrigation and drainage pumping station.
此观点对灌排泵站选择调节方式具有一定借鉴意义。
7·Space and time change on water-salt movement in saline-alkali soil without irrigation and drainage was studied and analyzed.
研究分析了榆林沙区无排灌条件盐碱地水盐运动的时空变化，其水盐运行主要是随着季节、地形等因素的变化而变化。
8·Farm irrigation and drainage mechanical power and grain purchasing price index have negative correlation to grain production.
农业排灌机械动力和粮食收购价格指数与粮食生产呈负相关。
9·In light of the above characteristics the application of mixed-flow pump in the hilly areas of farmland irrigation and drainage.
鉴于以上特点，混流泵适用于丘陵地区的农田排灌。
10·The paper explains even the environmental evaluation content of reservoir dam, flood control project, irrigation and drainage project.
文章还对水库大坝、防洪和灌排等类水利项目的环境评价的内容进行了概述。