两管的

Starting with the elevation of underground water resources and a safe level of mining through variable system theory, this paper analyzes the conditions of underground water resources based on the well-studied determination method of determining the two hydrographical coefficients: rainfall infiltration replenishment rate and irrigation replenishment rate. Then considering irrigation, rainfall, drainage and other related factors, a mathematical model is set up for the calculation of underground water storage,exploitation on water regulation. After analyzing the adaptability of molepipe drainage, an underground water table regulation is given out.

论文从灌区的地下水资源及其可开采量评价分析方面入手，在对两个主要的水文地质参数即降雨入渗补给系数、灌溉入渗补给系数确定方法研究的基础上，对灌区的地下水资源状况进行分析，依据灌区的灌溉、降雨、排水条件及各种现状因素，建立了地下水资源量计算的数学模型，西安理工大学工程硕士专业学位论文计算得到青铜峡灌区地下水的最大补给量和可开采量；另外对在开发利用地下水资源过程中的地下水位的调控进行了初步的探讨，在银北灌区开展对暗管排水调控地下水位的试验研究。

These ain't no overpriced threadbare-faux-worn-machine-sanded-abercrombie-fancy-mall-wannabe-cargos, OR cheapo "Multicrap" knock-offs made in Wherever-Stan. We use GENUINE 1st quality 100% spec'ed Crye Industries Multicam twill fabric, other top quality shrinkage controlled textiles, and American labor. Our utilities are conceived with smart design and quality first. These are truly cargo pants where form follows function and our customers all over the world from wildlife conservationists, explorers, backpackers, Federal Law Enforcement, and Military Professionals can attest to. We still construct our cargo pants with the more costly true bellows cargo pocket process. In additional to a much cleaner and more uniform appearance, we choose to not use the cheaper to sew common place 3 pleat BDU style. Our diamond shaped gusseted crotch allows for unrivaled mobility unlike any combat cargo currently available by anyone.

这是不是没有过高threadbare -失误问责-破旧的机器用砂纸-阿伯克-花式-商城-头一回-承运，或廉价的& multicrap &敲取舍作出哪里-斯坦，我们使用正版第一质量百分之一百spec'ed crye产业multicam斜纹布，等优质收缩控制纺织品，美国的劳动，我们的事业构思与设计精巧，质量第一，这是真正的货物裤子如表格如下功能及我们的客户遍布世界各地，从野生动物保育，探险者，背包，联邦执法和军事等专业人士，可以证明，我们还是建构我们的货运裤与较昂贵的真正的波纹管货物口袋进程中附加一个更清洁，更均匀的外观，我们选择不使用便宜缝纫共同发生三褶bdu作风，我们的菱形gusseted裆允许无与伦比的流动不同于任何打击货运现有任何人，每两人拥有超过60钢筋bartacks 。

That influential artists 2, age is still hours 3, Please give my greetings to your parents 1, his parents made him very happy things 2, a lot of houses have been built to meet the needs of the people 3, Lincoln is considered one of America's greatest president 4, in the prompt at any time, he has published two novels of the 5, to his 18-year-old, I believe that he was the university examinations into the 6, and sometimes it is hard to refuse the invitation of a friend 7, can turn the radio tube smaller 8, many students shut themselves up in a room to learn 9, most of them have experienced the Second World War 10, many people patronize the Carnival 11, the number of students in this school the school in excess 12, I can not help but laugh with them 13, to hear the exciting news, I could not help but jumped up happy 14, who, as a wise leader will be remembered 15, this book belongs to you do 16, master a foreign language is very difficult to 17, I lived in a remote house, but it does not feel lonely 18, can you imagine JOHN do like fishing in the river 19, he was very hard to learn.

问题补充：后面的 1、他父母对他所作的事情很满意 2、已经建造了好多房子来满足人民的需要 3、林肯被认为是美国最伟大的总统之一 4、在提示随时，他已经出版了两本小说了 5、到他十八岁时，我相信他会考进那所大学 6、有时拒绝朋友的邀请真的很难 7、能不能把收音机管小一点 8、许多学生把自己关在房间里学习 9、他们中的大多数人经历过第二次世界大战 10、许多人光顾了嘉年华 11、这所学校的学生数多余那所学校 12、我忍不住和他们一起笑了 13、听到这令人兴奋的消息，我忍不住开心的跳了起来 14、他作为一位睿智的领导人将被永远铭记 15、这本书属于你吗 16、掌握一门外语是很难的 17、我一人住在偏僻的房子里，但并不感到孤单 18、你能想像JOHN在河边钓鱼的样子吗 19、他很努力学习。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。