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We systemically discuss how to uniquely decide an infinite plane homography matrix by using the structure information in scene and how to evaluate a homography matrix which convert affine reconstruction to Euclidean reconstruction by solving absolute conic images.

系统地讨论了如何利用场景中的结构信息，来唯一地确定无穷远平面的单应矩阵，进而由射影重构恢复仿射重构，以及如何通过绝对二次曲线的像求解将仿射重构变换为欧氏重构的单应矩阵。

The hippocampus of each layer was segmented by the landmarks with invariableness and easy identificated one by one and gained areas of each slice in the imaging of inclined coronal plane and the head,body and tail of the hippocampus were divided by the landmarks.

在斜冠状位的图像上寻找较恒定和容易辨认的解剖标志点对海马进行逐层分割，同时根据确认的标志点对海马的头、体、尾进行分部。

Rats were conflicted to a spinal cord contusion by using a modified Allen′s method.SCBF were measured by hydrogen clearance preinjury and 1、4、8、24、72、168 hours after injury. The spinal cord motor evoked potentials were recorded by Konrad′s method and the motor function on the inclined plane was measured at the same time.

Allen′s法致伤大鼠脊髓，于伤前和伤后1、4、8、24、72、168h和1个月，采用氢清除法测量脊髓血流量，参照Konrad的方法记录脊髓运动诱发电位，应用斜板试验评价大鼠的运动功能。

The microstructure of the magnesium alloy before and after ECAP were examined by means of OM and TEM. The hardness of the as-extruded and unextruded Mg-6Zn-1Gd-0.6Zr magnesium alloy was examined by vickers hardness tester. The rolling of the crystal plane in the process of ECAP was analyzed by X-ray diffraction.

采用光学显微镜和透射电子显微镜分析了试样ECAP变形前后的显微组织变化，采用显维硬度计对Mg-6Zn-1Gd-0.6Zr合金ECAP变形前后进行了硬度测试，采用X-射线分析法分析了ECAP变形过程中晶面的转动。

According to Johnson's Rule and IR spectra, their possible structures are suggested. The bonding parameters of those complexes are calculated by ESR parameters. And the crystal field parameters are calculated by using electronic spectral data. It can be seen that the vanadyl complexes in the solution are ionic complexes and that the α〓 values of those complexes decrease following the increasing of the N donor replacing the O donor of water on the equatorial plane in those complexes. This means that the covalent bonding between vanadium and ligand increases as Ser, Phen or Bipy replace water ligands. The results show the competitive coordinate law that the coordination reactivity of Phen and Bipy is much stronger than that of Ser. The simulation program of ESR is compiled by the theory of ESR in the present work.

测定了VO-丝氨酸二元体系、VO-丝氨酸-邻菲咯啉三元体系和VO-丝氨酸联吡啶三元体系在不同酸度下（pH=1.0～14.0）的乙二醇／水（V／V=1：1）溶液低温ESR谱，发现不同pH下，溶液中具有不同组成的配合物，根据不同pH下ESR谱的变化，利用Johnson的加合规则并结合红外光谱，推测了它们在溶液中的可能结构；利用波谱参数计算了配合物键参数；利用电子光谱数据计算了配合物的晶体场参数，讨沦了它们的成配特性，结果表明：VO配合物属离子型配合物，随取代水分子的配体（Ser、Phen或Bipy）数目增加，键参数减小，配合物共价性增强，同时得出这些体系中，生物配体竞争配位规律：Phen和Bipy与VO的配位能力比Ser强。

One of the main causes of the noises of the modern jet plane is the strong fluctuation generated by the flows passing by the trading edge of the airfoil and the outlet of jet engine, and the mechanism of generation of noises canoed by the fluctuation has not been clear at present.

现代喷气式飞机的主要噪声源之一是在机翼的尾缘及喷流发动机的出口处，即流体流过尾缘时产生的强烈脉动，目前这类脉动产生噪声的机理尚不清楚。

In this paper, Gray code and line shifting structure light were projected to the object. Then the distortion images were got which can reconstruct the 3D model: The images space was divvied into 64 cycles by six sequence image the acquisition, the whole scanning plane has been covered by the mobile fringes, which has been cycled 20 times. With the parameters of two calibration cameras , the image pixels has been matched by the principle of geometry.

本论文的主要研究内容是利用格雷码加线移结构光对物体进行投影，再经摄像机采集到畸变的图像，结合相关算法以实现对物体的三维重构：摄像机采集到的6幅图像序列形成的格雷码将图像空间划分为64个周期，通过20次线条纹的移动完成对整个扫描平面的覆盖，在已获得两摄像机标定参数基础上，结合对极几何原理完成左右图像像素点的匹配。

To suppress the noise which caused by the fuzzy character of XLPE sample, the size of the photodetector was determined based on the analysis of the light intensity distribution in the spatial frequency plane when the laser beam passing through the sample was collected by lens. A series of detectors were designed to eliminate the time response decreasing effect caused by the increasing of the detector size. The developed laser system could resolve defects of 40 um diameter in XLPE tape with the 120um diameter and 400Hz scanning laser beam. after above results was used.

为了消除由于XLPE材料光弥散效应引起的信号噪声对信号幅度测量的影响和提高测试速度，研制了阵列组合式光电探测器，理论分析和实验验证都证明了该探测器有较好的频响特性和较低的噪声水平，应用这两项成果组成的信号系统及微机数据采集电路可在400Hz扫描频率下，扫描宽度所限制的120μm光束直径下获得40μm的测量分辨率。

This method is based on the blade second-order lifting-line model, the full-span free wake model, panel model for the fuselage and rotor trim model. By iterating induced velocities on the fuselage surface caused by rotor/wake and those on the rotor plane/wake caused by fuselage, a comprehensive analytical model is established.

该方法建立在桨叶的二阶升力线模型、旋翼的全展自由尾迹模型、机身的源面元模型、旋翼的配平模型的基础上，通过迭代旋翼/尾迹在机身上的诱导速度和机身在桨盘平面、尾迹定位点的诱导速度，形成一个全耦合的综合分析模型。

Nonlinear partial differential dynamic equations of bending vibration of a tilting stepped drive shaft with two supports were built under non-inertia movement coordinate system by theorem of the motion of mass center and Heaviside function. According to the condition of equal displacement in an adjoining plane of the shaft, an equivalent shaft and its equation were obtained. A motion equation of the equivalent shaft was obtained by method of Galerkin. An approximate steady-state solution of the main resonance was obtained by method of multiple scales. The influence factors, motion stability, amplitude jump of main resonance of a stepped drive shaft and so on were analyzed.

用质心运动定理、Heaviside函数建立了非惯性系下倾料两端支承阶梯传动轴的非线性弯曲振动偏微分动力学方程，并根据相邻轴段的衔接面处位移相等的条件，得到阶梯轴的当量轴及其动力学方程；用Galerkin法得到当量轴的弯曲运动方程，用多尺度法求得稳态下当量轴的主共振的一次近似定常解，分析了影响阶梯传动轴主共振的因素、运动稳定性、振幅突变性等。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。