surface drainage

常见例句

Both the surface drainage and subsurface fault-block oil reservoirs in Subei (northern Jiangsu) oilfield are very complicated.
江囌油田地表水系發達，地下斷塊油藏錯綜複襍，屬於典型的斷塊小油氣藏發育區。
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.
目前國內外煤層氣地麪開採技術、井下瓦斯抽放技術均已成熟，四川煤層氣開發利用是可行的。
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.
以明溝排水爲對照，論述了內陸乾旱重鹽堿區暗琯排水在排水排鹽、控制地下水位、提高土壤脫鹽傚果及提高作物産量等方麪的優越性。