含水层

It is difficult to drill or can not drill if we use routine methods, using through down-hole hammer air drill method not only raise rate of drilling, but also reduce pollution to the aquifer, promoting exploration and development for the deep underground water.

利用贯通式潜孔锤多工艺空气钻进方法不仅能提高钻进速度，而且能减少对含水层的污染，为深层地下水的勘探开发提供了技术支持。

Having proven the transformation between the analytical solution and some relevant classic formulas,suitable condition for each of these formulas is demonstrated.

根据模型解，逐一定量研究下述变量，如垂向入渗强度、河渠水位变动幅度、含水层结构参数如给水度和导压系数、计算点与边界之间的距离，对渗流过程的影响。

Both derivatives can be dissolved in 2 M hydrochloric acid and reextracted from the aqueous layer after basification.

两种衍生物在2 M盐酸可以被溶化和从含水层数被反萃取在碱化以后。

Mining Subsidence ; Soil water interactions ; Super static pore pressure ; Thick aqueous soil layer.

开采沉陷；水土相互作用；超静孔隙水压力；厚松散含水层

P1:This aquifer was named the Ogallala aquifer after the Ogallala Sioux Indians, who once inhabited the region.

译：这个含水层因曾经在这里定居过的奥加拉拉苏族印第安人而得名，被称作奥加拉拉含水层。

This paper research geology and hydrogeologic condition of Liangbaoshi coal mine, especially hydrogeologic condition of sandrock crack aquifer with high pressure which is the main threat to 3 coal seam based on full study of factual information.

本文分析了梁宝寺矿井的地质及水文地质条件，重点分析了威胁现主采煤层—3煤的主要含水层即高承压砂岩裂隙含水层的水文地质特征，根据已揭露的实际资料进行了详细分析研究。

As the geoacoustics propagates into a deep-buried aquifer, the pore pressure in the aquifer would be changed.

当它进入深部含水层传播时，将引起含水层孔隙压力的变化。

Many aquifers are also polluted, especially beneath major cities of developing countries, but the degree is unknown.

许多含水层、尤其是发展中国家大城市地下的含水层也受到污染，但是污染程度不明。

These are the principal aquifers of the UK. Chalk and particular sandstones, make up the 2 most important aquifers.

有很多的英国主要含水层，其中，石灰岩和特定的砂岩组成了2个最重要的含水层。

Based on the geological and mining conditions and occurrence characteristics of loose aquifer of Xinglongzhuang Colliery,water bursting cause of 4303 full-mechanized caving mining face under loose aquifer was analyzed,the prevention measures of the 3rd aquifer and reasonable dimension of coal pillar for sand proof were discussed in this paper.

根据兴隆庄煤矿地质采矿条件，结合松散含水层赋存特征，分析了四采区4303综放工作面第四系松散含水层出水的原因，探讨了防治三含水的技术途径和留设防砂煤柱的合理尺寸。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。