轴面

齿轮副瞬轴面研究

Investigation on the Axode of the Gear Pair

建立了轴面温度分布的半经验方程。

A semi-empirical formula relating to temperature distribution on the axial plane is established .

垂体CT轴面扫描技术对微腺瘤的诊断价值

Diagnostic value of pituitary microadenoma with computed axial tomography

离心泵CAD系统中叶轮轴面流道的设计

Design on Meridian Passage of Impellor in Centrifugal Pump CAD

基于CAD系统的离心泵叶轮轴面投影绘型

Research based on CAD system of drawing meridional plane in impeller of centrifugal pump

目的探讨CT或MR轴面影像上二腹肌后腹及其移位对区别腮腺间隙与咽旁间隙肿瘤的意义。

Objective To seek an approach to differentiate between tumors from parotid space and from parapharyngeal space on axial CT or MR imaging .

结论多层螺旋CT在腭裂术前能很好地显示腭裂各部位的形态，特别是在轴面上能显示硬腭裂开的程度。

Conclusion MSCT could excellently display the shape of all lesions before operation , especially the splitting degree of hard cleft palates in the axial images .

基于Bezier曲线叶轮轴面流道造型研究

Research on Modeling of Impeller Meridian Passage Based on Bezier Curves

因此避免了“内切圆校正法”中型线调整和面积计算等方面的不足，为离心泵叶轮CAD提供了一种有效的轴面流道建模方法。

Without inconvenience in shape alteration as well as inaccuracy in area calculation in traditional design methods , an effectively constraint modeling method of the profiles in CAD is obtained .

针对基于传统加工方式的离心泵水力CAD软件设计结果在叶片曲面造型及数控加工方面存在的问题，提出了一种沿轴面截线进行造型的新方案。

A new modeling method of twisted blade is presented in accordance with the shortcomings of traditional method in pump impeller design when modeling and NC manufacturing the surface of blade .

方法在68例正常人颌面、喉颈部CT检查个例的轴面图像上，对下颌骨设定A、B、C3条径线及α1角：A为下颌骨两游离端内缘间的距离；

Methods Several lines and angles on the CT images were measured in 68 normal subjects . Line A was the length between both free ends of the mandible ;

在给定叶片速度矩Vθr分布、厚度分布和转轮轴面流道几何形状的条件下，实现了混流式水轮机转轮的全三维有旋流动设计。

The design of Francis runner in the three-dimensional rotational flow can be performed according to the V θ r distribution 、 flow channel and the blade with given thickness distribution .

方法41例牙齿正畸的患者行螺旋CT轴面扫描，层厚30mm。

Methods The helical CT was performed with 3.0 mm slice thickness and 1.0 pitch in 41 patients with dental orthopaedics .

结合轴面源像（ASI）可提高对胆管细小结石的定性诊断。

N CTCP together with axial source image can improve the diagnosis of biliary mini stones .

比较层厚3mm、1mm的轴面图像及MPR图像。

The axial images of 3-mm , 1-mm section thickness , and MPR were compared .

区内第一期褶皱为NNW向、轴面东倾的同斜&平卧褶皱；

The first period NNW folds are recumbent-isoclinal .

因此，建立的叶轮轴面图全自动CFD优化方法是可行有效的，可为离心泵的水力优化设计提供参考。

Therefore , the automatic CFD optimum method of impeller meridional shape for centrifugal pumps is feasible and could provide a certain reference for optimum design of other pumps .

材料与方法：应用螺旋增强CT扫描获得原始轴面图像，采用SSD和MIP技术进行扫描范围内脑血管三维成像。

Materials and Methods : The original enhanced axial CT images were performed by helical CT . 3D intracranial vessel images were obtained by using SSD and MIP reconstruction technique .

较为详尽地介绍了变宽双流道叶轮设计参数的确定，轴面投影图及平面图的绘型方法，并介绍了可在Windows95以上系统下运行的该CAD应用软件。

This paper introduces the determination of design parameters of impeller with width-variation double channel and the drawing method of axial projection and plain projection ; Also it introduces its CAD application software that can operating beyond Windows 95 system .

扫描序列包括轴面T1WI、T2WI及T2WI，并在4.7TMR仪上测量标记细胞的弛豫率R2及R2的变化。

MRI scanning sequences included T_1WI , T_2WI and T_2WI . R_2 and R_2 relaxation rate of labeled cells were calculated .

在轴面沿轴向以1mm的梯度涂塑瓷粉至2mm将产生较多瓷裂，厚度突然中断则瓷裂严重；

More cracks took place when the powder thickness increased by 1 mm to 2 mm on the axial surface in the axial direction ;

全部图像行高分辨率骨密度算法重组，并利用多平面重建（MPR）技术重建轴面图像，得到2组不同mA值的直接扫描冠状面图像和与之对应的2组通过重建的轴面图像。

Two groups of direct coronal images with different mA values and corresponding reconstruction of axial plane images were obtained by bone algorithm recombination and multiplanar reformation ( MPR ) technology .

所有患者均行直肠内线圈的轴面T2WI序列扫描，所得图像经3D-Doctor软件处理后得到3D重组立体图像。

Using endorectal coil , a series of T2-weighted images were acquired on the axial plane . These source images were processed by 3D-Doctor software to reconstruct into three-dimensional images .

支气管走行方向也对效果产生影响，与轴面接近垂直走行的段支气管S1、S10在仿真内窥镜下走行最远，测量管径最细小；

The bronchial orientation had influence on VB . The luminal diameter of S1 / S10 ( these bronchi were vertical to axial section ) under VB was the smallest .

提出采用Bezier曲线解决水泵叶轮水力模型轴面投影流线及叶片绘型的方格网流线的动态调控方法，详尽地分析了在叶轮CAD中应用Bezier曲线的具体思路与方法。

This paper presents the dynamic controlling method of stream lines on axial plane projection of the hydraulic model and square grid of the blade drawing of the pump impeller . The ideas and methods of the application of Bezier curve in impeller CAD are analyzed in detail .

轴面T2WI显示胆总管或胰管突然蝌蚪或逗点样增粗5例。

Abrupt comma like enlargement of CBD or main pancreatic duct in the head of the pancreas outside the duodenal wall indicated the sign of APBDU as observing on sequential axial T_2WI in 5 cases .

组培苗顶端前2节位展开叶片，切成4mm×4mm左右，远轴面接触培养基时的再生效果最好。这种变化主要表现在叶片全展前后，到叶片发育后期则接近野生型。

The upper 2 expanding leaves of tube seedlings , cut into 4 mm X 4 mm and inoculated with abaxial layer downside may have the greatest regeneration efficiency . This variation was shown in the stage when the leaves were expanding .

资料与方法26例胆系疾病患者口服碘番酸6g，12h后行上腹部快速容积扫描，获取轴面原始图像后再进行胆管系统的二维和三维重建。

Materials and Methods Iopanoic acid of 6 gram was orally administered to 6 patients with suspected biliary duct disease . After 12 hours , fast helical CT volumetric scanning of the upper abdomen was performed . 2D and 3D reformations from axial source images were carried out .

根据断层性质与大小主应力的方向关系、褶皱构造的轴面方向等得出区域最大主应力的方向为NE-NW向。

According to the relationship between fault properties and directions of principle stresses , the directions of the axial planes of the folds , the direction of maximum principal stress in this area is NE-NW trending .

叶片近轴面接触培养基转化效率较好，显著高于远轴面；

The adaxial side in contact with the medium was higher .