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The design of digital notch filters can be achieved through three steps:firstly,the design of analog lowpass filter; secondly,it is analog lowpass to analog band stop filter conversion;at last,using the bilinear transformation make the analog notch filters change into digital notch filters.

研究一种在Matlab语言环境下设计IIR数字陷波滤波器的方法，在数字陷波滤波器设计过程中，先进行模拟低通滤波器的设计，然后进行模拟低通/模拟带阻滤波器转换，最后采用双线性变化法将模拟陷波滤波器转化成数字陷波滤波器。

along with the development of digital technology,digital filters are widely used in many fields,this paper introduces how to design a iir digital notch filters in matlab environment.the design of digital notch filters can be achieved through three steps:firstly,the design of analog lowpass filter; secondly,it is analog lowpass to analog band stop filter conversion;at last,using the bilinear transformation make the analog notch filters change into digital notch filters.the paper also introduces how to design the transfer function of the digital notch filters using all the zeros and farthest points at the same time,it also introduces the program of the digital notch filters under butterworth analog lowpass prototype.

摘 要：随着数字技术的发展，数字滤波器在许多领域得到广泛的应用。研究一种在matlab语言环境下设计iir数字陷波滤波器的方法，在数字陷波滤波器设计过程中，先进行模拟低通滤波器的设计，然后进行模拟低通/模拟带阻滤波器转换，最后采用双线性变化法将模拟陷波滤波器转化成数字陷波滤波器。提出一种用所有零点和极点来表达数字陷波器传递函数的方法，同时给出以巴特沃斯模拟低通为原型设计数字陷波滤波器的程序。关键词：无限冲激响应；巴特沃斯滤波器；数字陷波滤波器；matlab；双线性变换

On the basis of seismic data and regionally electromagnetic sounding data in zhanhe fault depression and Jiayin fault depression,combining the drilling data of Jia-D1 well and Jia-D2 well,beginning from geologically constructional character of the basin and its circumambience,integrating the up-to-dade theories of sequence stratigraphy home and abroad,the thesis firsthy indudes the constructional pattern,the process of constructional evolvement,the process of sedimentary evolvement,the character of lava\'s groming and the geological character of oil\'s producing,depositing and coveringThe tectonic framwork of Zhanhe fault depression is two sags and one uplift , the tectonic framwork of Jiayin fault depression is three sags and two uplifts, the strikes of structures are the north north-east, early it is a fault depressions and later becomes a depression s so this basin is faulted depressed basins.

涉及隐私，隐去***论文是以沾河断陷、嘉荫断陷地震资料及区域电磁测深资料为基础，结合嘉D1、嘉D2井钻井资料，从盆地及其周边的地质构造特征出发，结合国内、外最新层序地层学理论，首次总结了沾河—嘉荫断陷构造格式、构造演化过程、沉积演化过程、火山岩发育特征和生储盖石油地质特征。沾河断陷表现为两凸夹一凹的构造格式，嘉荫断陷表现为三凸夹两凹，构造走向均为近北北东向，早期表现为断陷特征，晚期表现为坳陷特征，为断、坳复合型盆地。

The principle of trapping is at the junction of the color of the color of the light color of a party to the dark side as appropriate, the number of specific expansion under business card printing and membership card production situation settings, such as under business card printing and membership card-making machine for positive, now a lot of software in the trapping settings feature some big companies also have professional software, trapping on trapping provides better control.

陷印办理的道理是不兵颜色交界处的淡色一方的颜色不合向深色一方蔓延，抽象蔓延多多可根据制卡和会员卡制息的本质环境进动撤销（如根据制卡和会员卡制息机的套准精量），此刻许多软件洋都有陷印撤销功用，一些不小公司还有副业的陷印软件，差陷印供答了更好的把持。

The graben geomorphic characteristics of Northern Xiqiangtang and Changjiang Riverhead depressions are obvious, whereas the Huanghe Riverhead and Ruoergai depressions are of relatively low development degree. However, they are products of the east-west geomorphic extensive deformation, and the dynamic background of the deformation is the same as that of the continental tectonic deformation of Qinghai-Tibet plateau.

其中西羌塘北部坳陷和长江源坳陷的地堑式裂陷地貌特徵明显，而黄河源坳陷和若尔盖坳陷发育程度较低，但它们均是在青藏高原大陆构造变形的统一动力学背景下，地貌发生东西向伸展变形的产物。

Conclution Enophthalmos usually appeared in the second and third week, and it tended to steady until the third month. The ratio is 1.0 between the expansion of the orbital volume behind the axis of the globe and the degree of enophthalmos. The ratio measurement may predict the occurrence and the final degree of the enophthalmos , may provide precise parameter for implant's volume . It has very important clinical significance.

眼球内陷通常于伤后2周～3周出现，3个月时趋向稳定；后部眶容积增大与眼球内陷产生比值为1.0，呈正相关；后部眶容积扩大与眼球内陷比值可预测发生眼球内陷的可能性和程度，为手术矫正眼球内陷提供可靠、精确的参考，具有十分重要的临床指导意义。

Results In early stage group, 5 of 60 cases appeared enophthalmos in first week(8.33%), 48(80%)cases appeared in second week, 53(88.33%)cases appeared in third week. No significant difference was found in second week and third week（χ2＝1.563, P＜0.001. There were significant difference between the first week and second week（χ2＝62.484,P＜0.001 ,the first week and third week（χ2＝76.885,P＜0.001）. There was significant linear correlation between expansion of the orbital volume behind the axis of the globe and the degree of enophthalmos（r=0.994,P＜0.001,with each 1.0ml expansion in the orbital volume behind the axis of the globe causing approximately 1.0mm enophthalmos.

结果：早期组60例患者中，5（8.33%）例患者在1周内出现眼球内陷，48（80%）例在2周内出现内陷， 3周时有53（88.33%）例呈现出内陷；2周时出现眼球内陷的例数与1周时有显著性差异（χ2＝62.484， P＜0.001），2周时出现眼球内陷例数与3周时无差异（χ2＝1.563， P＞0.05），1周时出现眼球内陷例数与3周时有显著差异（χ2＝76.885，P＜0.001），后部眶容积增大与眼球内陷的比值约为1.0，两者之间呈正相关（r=0.994，P＜0.001），即后部眶容积每增加1ml，产生1.0mm的眼球内陷。

The closing of the Yaluzangbu suture zone during Oligocene to Miocene and the intracontinental subduction towards to north of the Indian plate occurred in Himalayan piedmont zone during Pliocene to Pleistocene, caused the Himalayan mountain uplifting highly and the Henghe foredeep settling deeply.

3通过塔西南拗陷、库车拗陷、川西拗陷、准噶尔南缘拗陷中新生界构造演化、地层沉积、烃源岩特征、形变特征的类比分析，将库车拗陷、准噶尔南缘拗陷划分为弱压扭盆地；塔西南拗陷、川西拗陷划分为强压扭盆地。

Through contrasting and analysing the experimental results from these methods, the paper summarizes the regularity of collapsing deformation and the shear strength index changes with the degree of saturation and stress, describes the collapsing deformation properties and strength characters of the collapsible loess in the course of moistening and drying, and describes the influence to collapsing deformation of loess from different paths of stress. Through performing monaxial compression test on samples with different paths of inundation and direction of press, proves the conclusion that collapse has nothing to do with the path of inundation and the collapsible loess has the prominent anisotropy characters.

通过对几种方法得出的试验结果进行对比和分析，总结出黄土的湿陷变形和抗剪强度指标随饱和度以及压力变化的规律，借以描述湿陷性黄土在增湿过程中的湿陷变形性状、强度特性以及不同应力路径对黄土变形特性的影响；按不同的浸水路径和受力方向对土样进行单轴压缩试验，证明了湿陷与浸水路径无关的结论以及湿陷性黄土显著的各向异性特征。

Evolution history of Jianghan Basin can be divided into Seven stages by sedimentary character since Cretaceous: uplifting and decomposing stage (lower-middle Cretaceous), whole downfaulting stage , regional subsiding stage , uplifting and decomposing stage , differential downfaulting , shinking-subsiding-uplifting and denudating , subsiding stage , differential elevating and subsiding-stabilizing stage (lower Pleistocene-early stage of middle Pleistocene), whole subsiding stage (middle stage of middle Pleistocene), shringking stage (upper Pleistocene-Holocene).

通过对江汉盆地白垩纪以来沉积特征的分析认为，江汉盆地的整体演化可以分成七个阶段，分别为：拱升张裂、整体断陷、区域坳陷、拱升张裂、分化断陷、萎缩坳陷—上升剥蚀、坳陷阶段、差异升降—稳定阶段（早更新世—中更新世早期）、整体坳陷阶段（中更新世中期—晚更新世）、萎缩阶段。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。