等轴

Results: MPR together with axial images could well display the entire picture of spondyloschisis and spinalcanal. Conclusion: Spiral CT together with MPR plays an important role in detecting spondyloschisis.

结果 多平面重建矢状面图像和轴位对18例31处椎弓崩裂均显示良好，轴位对裂隙骨赘、骨痂、纤维组织增生，椎间盘病变等征象显示清晰，正中矢状面重建对椎体滑脱，椎体撕裂或骨赘后突显示良好。

When the undrawn films were annealed atthose temperatures, the morphologies in the lamellar crystals had change. WAXDand iR studies shown that the crystallinities incrcand, dimensions in (002) and(020) normals increased while that in (200) fold had slight decreases. The rela-tionship between the orientation of the drawn UHMWPE gel-films and the struc-ture changes and the optimum drawing temperature had been disscussed.

通过IR及X－ray衍射等方法研究发现，拉伸前用不同温度退火处理后，凝胶膜的片晶微结构产生明显变化，在对应于超高拉伸温度范围内，其结晶度增加，微晶的c和b轴方向尺寸变大，而a轴方向的尺寸减小，从理论上对这一变化过程作了考察，并讨论了超高拉伸取向性与这些结构变化的关系以及可超拉伸取向性的最佳温度范围。

In literature, experimental technique such as elongation and pressurization were applied to the aortas.

以往的研究多采用以液体或气体给动脉加压或轴向拉伸等手段，揭示了动脉轴向、周向和径向的力学特性。

The flexible shafts have better strength and rigidity than ordinary level, they are ideal substitute for conventiona level and universaljoint with such merits as : light weight, good flexibility, easily crooking, compact constru—ction, easily installation, good seal, proof rust and anti—deformation, neatly operation.

工作原理：机械操纵系统中的连接部位受力位移时，软轴的芯轴受力，产生往复运动，形成拉力、推力驱使机械作换挡、取力、升降、行走、加油、熄火、制动、转向、换向等工作，它不但优于一般杠杆的强度、刚性而且重量轻、柔性好、可弯曲、结构紧凑、安装方便、密封性好，不易锈蚀变形，操作轻便灵活，是替代传统的连杆、万向节机构的理想产品。

The first chapter of the paper mainly states the research of HPM source and HPM appliance based on the transit-time effect,the second chapter introduces a variety of HPM source in investgating course,capability,fabric,research condition,developing tendency aspects and so on,the third chapter descants HPM source based on the axial transit-time effect , the radial transit-time effect and the low diode impedance HPM source based on the axial transit-time effect,the forth chapter includes a conclusion of HPM source and HPM appliance based on the transit-time effect,and gives a assumption of the work in the future.

本文第一章主要简述了高功率微波源和基于渡越时间效应的器件的研究情况，第二章从研发过程、性能参数、结构特点、研究现状、发展趋势等方面系统介绍了各种高功率微波源。第三章则从各个方面详尽介绍了基于轴向渡越时间效应、基于径向渡越时间效应的器件以及低阻抗的轴向渡越时间振荡器，第四章则对高功率微波源和基于渡越时间效应的器件的发展做出了结论，并对以后的工作提出了构想。

The product nearly can be applied to all fire occasions. For vertical turbine fire pump, it's suction immerges into water, the maximal suction height is 30m, it start up rapidly and run reliably. Especially it is suitable for engineering places that water level is below pump installation foundation such as docks, ocean platform, and so on.

立式长轴式消防泵采用独特的立式长轴结构，泵吸入口淹没于水中，泵安装面距液位高度最大可达30m，由于不存在引水问题使得可靠性大大提高，尤其适用于码头、海洋平台等消防水液位低于泵安装面的工程场所。

In thin sections and macerated specimens, axial canal and concentric stratification within the sponge spicules can be observed.

骨针形态完整，并保存了内部轴丝、轴管以及同心圈层等微细构造。

The manual steering system is composed of steering wheel,shaft and column,steering gear and pitman arm,steering knuckles and ball joint,spindle assembly,etc.

手动转向系统包括方向盘，转向轴和转向柱，转向器，转向摇臂，转向节，转向节球头以及转向轴总成等部件。

A set of measurement system for bearing and axle journal on passenger car has been developed to fulfill the work of measuring the dimension,data saving,communication and data management,which overcomes disadvantage of manual measurement,such as low efficiencies,high cost,high labor intensity and low precision.

针对铁路客车轴承与轴颈人工测量效率低、成本高、劳动强度大、精度差等缺点，研制了一套客车轴承与轴颈尺寸的测量系统，能够完成尺寸的测量、数据存储、通信和管理工作。

The results show that the pad tilting angle in static equilibrium is related to the structural parameters of pad, eccentricity of axle journal to pad, and elearance ratio, but is unrelatrd to the axle journal speed, viscosity of oil film, etc.

研究表明，瓦块静平衡摆角只与瓦块结构参数、轴颈相对瓦块偏心率，间隙比有关，而与轴颈转速、油膜粘度等无关。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐