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.

利用貫通式潛孔錘多工藝空氣鉆進(jìn)方法不僅能提高鉆進(jìn)速度在线免费视频网址，而且能減少對(duì)含水層的污染久久R99视频，為深層地下水的勘探開發(fā)提供了技術(shù)支持人人看人人上人人干。

The work of this paper is very important to the theory and engineering application on coal mining above aquifer.

本文的工作對(duì)帶壓開采的安全具有較深的理論價(jià)值與應(yīng)用價(jià)值国产专区亚洲欧美综合久久。

The main research task of this paper is as follows: The simulated annealing algorithm is put into identifying aquifer parameters.

通過(guò)實(shí)例的數(shù)值實(shí)驗(yàn)又粗又长又色又爽视频，對(duì)其中存在的問(wèn)題進(jìn)行了一定的分析和討論国产日韩视频合集一区。

The technology of soil aquifer treatment has a good adaptability and feasibility in China.

土壤滲濾處理技術(shù)在我國(guó)廣大地區(qū)有很好的適應(yīng)性和可行性，將有很好的發(fā)展前景男女猛烈无遮挡免费视频滚床。

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

這個(gè)蓄水層因曾經(jīng)在這里定居過(guò)的奧加拉拉蘇族印第安人而得名一级大香一级大香香蕉，被稱作奧加拉拉蓄水層。

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

譯：這個(gè)含水層因曾經(jīng)在這里定居過(guò)的奧加拉拉蘇族印第安人而得名欧美国产综合操逼视频，被稱作奧加拉拉含水層一级片高清无码在线观看不卡。

The most dramatic example is the Ogallala aquifer,the largest underground water source in the world.this enormous reserve runs through the agriculturally critical high plains states,from south Dakota to central texas.over-pumping for irragation has drained some parts of the aquifer dry and persistent regional drought has stifled refill by underground streams.

過(guò)多地采集地下水用于灌溉已經(jīng)使地下水層的一些地方干枯，而且持續(xù)的區(qū)域性干旱也使地下河不能補(bǔ)充地下水層先锋影音最新资源网站。

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

當(dāng)它進(jìn)入深部含水層傳播時(shí)69毛片免费视频观看，將引起含水層孔隙壓力的變化。

Isotopes such as hydrogen, oxygen and sulphur show water source is complex, and composition of water is chiefly from middle Ordovician aquifer, added more and more from lower Ordovician aquifer from catchment area to discharge area.

本文系統(tǒng)總結(jié)了巖溶水中氫欧美人成视频在线、氧黄片儿小视频、硫同位素組成特征，并從中提取了有關(guān)水的來(lái)源和水資源組成等信息天堂AⅤ久久天堂天天看，從多個(gè)角度論證了地球化學(xué)作用過(guò)程和水動(dòng)條件自拍偷拍毛片。

The tracer migration that the tracer concentration continuously injecting into semi-infinite sand column(initialization velocity is zero) and the pollutant continuously enter into aquifer through a discharging well that completely enter into the dive aquifer are two representative groundwater pollution problems ,Then this paper respectively sets above two decided solution problems and the union simulation problem of groundwater and solute as examples, from the question description, the mathematical model selection and determination, the parameters selecting to carry on the value computation, the read-write of attribute data , visualizes by the IDL programs, carries on the numerical simulation and the visualization post-processing to the above groundwater pollution problems, and according to the numerical solution and the solute migration curves, briefly analyzes and predicts the temporal and spatial distribution features and distribution range of contaminant concentration.

然后分別以半無(wú)限長(zhǎng)沙柱中連續(xù)注入示蹤劑濃度的運(yùn)移黄色网操B人人操老女人B网、污染物通過(guò)一完全進(jìn)入潛水層的排放井連續(xù)進(jìn)入含水層這兩個(gè)典型地下水污染定解問(wèn)題及地下水流和水質(zhì)聯(lián)合模擬問(wèn)題為例，從問(wèn)題描述QVOD经典激情视频图片小说、數(shù)學(xué)模型選取確定超污国产黄网站在线观看、參數(shù)選取到運(yùn)用IDL編程進(jìn)行數(shù)值計(jì)算、屬性數(shù)據(jù)讀寫超碰在线免费、可視化人人操人操人人射，對(duì)上述地下水污染問(wèn)題進(jìn)行數(shù)值模擬和可視化的后處理，并根據(jù)數(shù)值模擬的數(shù)值結(jié)果和溶質(zhì)運(yùn)移曲線九一视频在线下载，對(duì)污染物濃度的分布范圍及隨時(shí)空變化趨勢(shì)作了簡(jiǎn)要分析預(yù)測(cè)欧美国产综合在线。