The expression of optic axial angle and ray axial angle on light wave plane can be obtained by using the curve equations of the wavefront of light wave and normal plane of light wave. 利用光波面和光波法线面的曲线方程,得出了光波面上光轴角和光线轴角的表达式。
Please note this syncline is of inclined axial plane which has the same dip direction as the limb with gentle dip angle. 请注意,这个向斜构造的轴面是倾斜的,轴面的倾向与具有较缓一翼岩层的倾向一致。
Theory and method of simulating axial symmetry field by plane resistance network 利用平面电阻网格模拟轴对称场的原理和方法
With the use of numerical grid generation technique, a new pump impeller design method is proposed, which can determine the passage and streamlines in axial plane. The one of the key problems in pump CAD can be accomplished properly by the present method. 应用偏微分数值网格生成技术,提出了一种水泵叶轮设计的新方法,该方法可以准确地确定轴面流道和流线,较好的解决了水泵计算机辅助设计的关键问题之一。
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. 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。
Methods Thirty seven cases of infiltrative ductal carcinoma which confirmed by surgical pathology were performed molybdenum mammography with axial and oblique plane. 方法37例经病理证实的乳腺浸润性导管癌,钼靶摄取乳腺轴、斜位片,分析其影像学表现。
Purpose: To evaluate the position of the patellar in axial plane, the patellar shift angle ( PSA) was reported to act as a diagnostic index for the localization of patellar in CT imaging. 目的:为在横断面上评价膑骨位置,本文提出膑骨移位角(PSA)作为CT上髌骨位置的测量指标。
Qinhuangdao antiform is formed by folding of the axial plane of the synclinorium with the hinge located at Qinhuangdao. 秦皇岛背形以秦皇岛&凌源断裂为轴面,由复向斜的轴面褶皱而成,背形转折端在秦皇岛,呈相对上翘。
Axial plane scanning were routinely done with 3 mm slice and addition to coronal plane scanning in 14 cases, coronal and/ or sagittal plane reconstructed images were performed in 31 cases. CT检查常规3mm横断扫描,14例加作冠状扫描,31例加作冠状和/或矢状重建。
The flow is ( symmetric) and there is no axial velocity on the symmetric plane; 流动关于对称面对称,在对称面上不存在轴向速度;
Conclusion There is a safe range to insert atlas screw via posterior arch and lateral mass both in sagittal and axial plane. 结论寰椎后弓侧块置钉在矢状面和轴平面上均有一定的安全角度范围,依据此范围置钉可增加寰椎后弓侧块螺钉固定的安全性和可操作性。
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. 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。
A resistance network analogue for magnetic field with both axial and plane symmetry 轴对称兼平面对称磁场电阻网络模拟机
A transformation procedure of axisymmetrical elasticity problems from space 3D to axial plane is described and a corresponding program with linear and quadratic boundary elements in tension compression and torsion is developed. 论述了将轴对称问题自三维空间转化为轴平面内问题的过程并编制出相应的受拉压和扭转的线性和二次边界元程序。
In the axial plane the types of disc herniation and involvement of the nerve and cord were demonstrated. 横切面可观察到椎间盘突出类型及神经根脊髓受累情况。
According to the definition of the angular momentum, the paper discusses any axial angular momentum of plane motion of rigid body, and works out the theorem of rotation of axis of center-of-mass and instant center in plane motion of rigid body. 从角动量的定义出发,计论了刚体平面运动时对任一定轴的角动量,推出了刚体平面运动时对质心轴、瞬心轴的转动定理。
Magnetic Fields Distribution on an Axial Plane in Relationship to a Vertically Circular and Electric Current 垂直圆电流轴线的平面上的磁场分布
The principles of computer methods in determination of fold hinge, axial plane, type of π fabric and in classification of fold orientation are discussed. 本文介绍了求解褶皱枢纽及轴面,确定π组构类型和褶皱位态分类的计算机方法原理,程序使用方法(资料收集、程序操作步骤等)和效果。
The strength analysis of a drop-shaped tube is resolved into the following problem: axial compression together with a plane state of strain with uniform internal pressure. 把滴形管的强度分析问题分解为:沿管轴线方向的压力问题与管沿周线方向均布压力的平面应变问题的叠加。
Results ( 1) Oblique-axial plane: on this plane, the arrangement of all metatarsal bones and the corresponding relation can be clearly displayed, and morphological features also can be observed. 斜轴位平面:在此平面,中足各骨的排列以及相对应的关系能够清晰显示,并且能够观察到关节面的形态特征。
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. 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。
A semi-empirical formula relating to temperature distribution on the axial plane is established. 建立了轴面温度分布的半经验方程。
Methods: Thirty-six patients ( 49 lacrimal ducts) underwent CT dacryocystography with angiografin ( 300mg I/ ml) or lipiodol ( 40%) by axial or coronal plane. Lacrimal ducts, location of obstruction and adjacent structure were showed by CT dacryocystography. 方法:36例(49侧)溢泪患者行CT泪道造影检查,分别选用300mgI/ml泛影葡胺、40%碘化油行CT横断面、冠状面扫描,观察CT对泪道、阻塞平面及周围结构的显示效果。
This paper presents a new axis, axial plane projection mapping method. 本文提出了一种新的轴面轴面投影图的绘制方法。
After ablation 20 minutes, along the electrode needle axial plane cut to observe the scope of coagulation area. 消融20分钟后,沿电极针轴位平面切开观察骨质凝固范围。
Otherwise, most of ligaments of all parsis jointing with oblique-axial plane can be clearly demonstrated. 另外,大部分中足各路骨间的韧带连接在斜轴位平面能够清晰显示。