开采这些超深的油矿沉积层所需的钻探压力是开采海上石油正常压力的三倍。
These ultra-deep deposits must be drilled at up to three times the normal pressure for offshore oil.
厚松散层薄基岩下开采引起的地表移动规律及地表移动参数，有其明显的自身特点和规律。
The regularity and parameter of surface movement aroused by mining under thick soil layer and thin base rock have its obvious characteristic and regularity.
滨海潜水含水层是滨海地区开采淡水的重要目的层。
Unconfind aquifers are important for supplying of fresh water in coastal area.
应用推荐