surface drainage

常见例句

Both the surface drainage and subsurface fault-block oil reservoirs in Subei (northern Jiangsu) oilfield are very complicated.
江苏油田地表水系发达，地下断块油藏错综复杂，属于典型的断块小油气藏发育区。
At present, the technique of coal-bed methane surface mine and gas drainage was mature, so it was feasible for coal-bed methane development and utilization in Sichuan Province.
目前国内外煤层气地面开采技术、井下瓦斯抽放技术均已成熟，四川煤层气开发利用是可行的。
Subsurface pipe drainage in drought-prone region is superior to surface drainage in draining off water and salt, controlling ground water-level, and increasing crop output, etc.
以明沟排水为对照，论述了内陆干旱重盐碱区暗管排水在排水排盐、控制地下水位、提高土壤脱盐效果及提高作物产量等方面的优越性。