查询词典 hemispherical

I originally planned to design a true hemispherical shaped canopy, but further investigation revealed that a semi-elliptical shape would provide essentially the same drag as that of a hemispherical shape.

我原本计划设计一个真正的半球状的檐篷，但进一步调查显示，一个半椭圆形状将提供基本相同的拖曳，因为这一个半球形的形状。

In patients with a large superior segmental bone deficiency, the resulting acetabular recess is elliptical rather than hemispherical, and a bilobed or oblong implant can be used instead of a large structural graft or excessiely high placement of a hemispherical component Fig.

髋臼上方有大块骨缺损的病人，其髋臼窝变为椭圆形而非半球形，因此可用双叶形或椭圆形假体替代大块结构性骨移植，或在高位植入半球形假体（图7－40，A）。

Results indicate that radial distance of the bushing from the rotor center and the radius of the hemispherical bushing significantly affect wear rate,and minimzing both two values will result in lowest wear for micro-rotor systems in MEMS.However,it is noted that the bearing radius sets a lower limit on the hemispherical bushing radius since the bushings are located beyond the rotor inner radius.It is desirable to reduce their effects on friction and wear on micro-rotors by regulating the radius of the bushing and the radial distance of the bushing from the rotor center within permissive range of micro-fabrication.Severe wear exists with increasing applied load and rotating speed of the rotor.Stress distributions in the contact region are different from Hertz solutions due to the convergence stresses apearing on the uncontinuous curvature line and the contact pressures display symmetrical parabola in the contact region.

结果表明：在MEMS微转子系统中，微转子轴衬偏心距离和转子轴衬半径影响线磨损率，以两者减至最小为较理想，但须注意设计中轴承半径的限制，并使轴衬偏心距离大于轴承内半径；在转子加工制造许可的范围内，可以通过调整转子轴衬的半径和偏心距离来减少摩擦磨损对微电机的影响，随着转子所承受载荷和转子旋转速度的增加，其磨损严重；接触区的应力分布不同于经典Hertz解，这是由于应力集中出现在不连续的曲率线上，且接触区的接触压力呈现轴对称抛物线状分布。

Methods: 79 cases of axilla accessory breast with hemispherical or rugged local surface were resected.

对79例呈半球状和不规则隆起的腋部副乳腺进行切除整复治疗。

with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.

小 摘要：随着卫星导航通信技术的迅速发展，天线作为卫星导航通信系统中的重要部分，在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线，讲述爬行波式螺旋天线的设计过程，并给出最终测试结果。结果表明，该天线具有优良的圆对称半球波束，良好的广角圆极化特性和优良的阻抗匹配特性，其结构简单、紧凑，为通信入站回传提供了一种优良的选择。

Buddhism gained prominence during the reign of the emperor Ashoka. It is primarily represented by three important building types- the Chaitya Hall, the Vihara and the Stupa (hemispherical mound for worship/ memory)- exemplified by the magnificent caves of Ajanta and Ellora and the monumental Sanchi Stupa.

佛教在阿索卡国王统治时期得到了显著重视，最初是由三种最重要类型的建筑作为代表——佛教寺庙或圣地，寺院，佛塔（作为崇拜/回忆的半球状土墩）——例如，阿旃陀和爱罗拉石窟，还有不朽的桑吉佛塔。

The approximate cosine distributive law of hemispherical gas cloud between the impulse field and the barrier parameter was founded.

并对正交实验进行分析，得到障碍物两个特性参数对爆炸冲量场的影响是显著的。

A large hemispherical brass or copper drum with a drumhead that can be tuned by adjusting the tension on it.

带有可调整张力鼓膜的半球形铜鼓。

Superplastic forming process of hemispherical ceramic part wasanalyzed using finite element method to improve the thickness distribution of thedimension.

对半球形陶瓷零件超塑成形过程进行了有限元分析，从而改善零件的壁厚分布。

This course consists of three parts : A.The fundamental theory of gyroscopes. a.Kinematics and dynamics of gyroscopes, consisting of Coriolis acceleration, theorem of angular momentum, Euler's dynamical equations, dynamical explanation of gyroscopes' properties. b.Gyroscopes' motion equations, including the complete equations, technical equations and precession equations derived from Euler's dynamical equations, and the technical equations derived from static vs. dynamic method. c.Analysis of gyroscopes' motion. d.Coordinate systems and their mutual transformation. e.Gyroscope drift and its measurement. B.Principle of typical gyroscope instruments, such as gyro compass, gyro north finder, gyro horizon, platform compass, rate gyroscope and integrating gyroscope. C.Principles and applications of new-type gyroscpes, such as electrically suspended gyro, ring laser gyroscope, fiber optical gyroscope, hemispherical resonator gyro, dynamically tuned gyroscope and micro inertial sensors.

本课程教学内容由三部分组成：陀螺仪的基本理论，内容包括：陀螺力学基础（哥氏加速度、角动量定理和欧拉动力学方程、陀螺特性的力学解释）；陀螺仪运动方程和运动分析（用欧拉动力学方程建立完整方程、陀螺仪运动的技术方程和进动方程，用动静法建立技术方程）；坐标系及其变换；陀螺仪的漂移及其测试；典型陀螺仪器（包括陀螺罗经、陀螺找北仪、陀螺地平仪、平台罗经、速率陀螺仪和积分陀螺仪等）的工作原理；新型陀螺仪（包括静电陀螺仪、激光陀螺仪、光纤陀螺仪、半球谐振陀螺仪、挠性陀螺仪、微机械陀螺仪等）的原理及应用。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？