暗管 meaning in English
concealed [conduit] piping; covered conduit
◇暗管排水 closed drainage; covered drain
Examples
- Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage
暗管排水条件下土壤特性和作物产量的空间变异性分析 - Application of nitrogen leaching losses mixed simulative model in tile effluent from the drained paddy rice field
暗管排水稻田中氮素淋失动态混合模型及应用 - Experiment and research on seepage effect by underground pipe drainage system of paddy field in saline soil coastland
滨海盐土地区稻田暗管排水效果试验研究 - Several methods of determining the optimal space and depth of subsurface plastic drainage tubes are explicated and summarized in this paper
本文介绍了农田塑料暗管埋深和间距的确定方法，并对之进行了评述。 - Pvc subdrainage is one kind of advanced drainage techniques developed in recent years in the world . it will have a promising future of wide application
塑料暗管是一种新型的排水材料，具有很好的排水效果，应用前景广阔。