副的

The mechanics model of a ball screw was developed considering the factor of lead angle,and the main curvature of the helical surface was deduced using differential geometry method,and the effect of lead angle on the elastic deformation was analyzed.

考虑螺旋升角的因素，建立了滚珠丝杠副的受力模型，应用微分几何理论推导了螺旋面的主曲率，并进一步分析了螺旋升角对滚珠丝杠副弹性变形的影响。

The aim of the subject is to design and check the strength of the gears of crown gear coupling from the Beijing subway and to analyse the teeth by means of 3D FE elastic contact method. The result can numerically and theoretical support the design and manufacture of crown gear coupling.

本课题研究的目的是通过对北京地铁联轴器齿轮副进行强度设计和校核，并且对其进行三维弹性接触有限元分析，得出鼓形齿联轴器齿轮副的弹性接触状况，为鼓形齿联轴器的设计及制造提供数据和理论支持。

By combining with Poincare mapping and phase plane plot, the simple harmonic, non-harmonic monocycle, subharmonic, quasi-periodic and chaotic response arised in the system under different backlas...

通过分析各齿轮副的动载荷系数变化规律，讨论了各齿轮副啮合状态在非冲击、单边冲击以及双边冲击状态之间的转化过程和齿侧间隙的关系。

Planar motion also requires that axes of all prismatic pairs and all revolute axes be normal to the plane motion.

平面运动需要所有的棱形副的轴和转动副的轴都垂直于运动平面。

Planar motion also requires that axes of all prismatic pairs and all revolute axes be normal to the plane motion.

平面运动也还要求所有的菱形副的轴和转动副的轴都垂直于运动平面。

In spheric linkages, the axes of all revolute pairs must intersect at point.

任一包含如螺旋副的机构都是一空间机构，因为螺旋副的相对运动是螺旋的。

The abrupt change in temperature is one of the main characteristics in scuffing. Studies have showed that friction pair temperature plays an important role in scuffing.

温度突变是胶合发生的主要特征之一，有关研究表明摩擦副温度对胶合发生起着重要作用，因此，从摩擦副的温度来着手研究胶合现象是胶合研究领域的一个重要方向。

In order to improve tribological performance and service life of disc-brake pair materials for drilling rig, buildup welding material of brake disc and asbestos-free material of brake block were developed.

为提高深井石油钻机盘式刹车副的摩擦学性能和使用寿命，研制开发了新型刹车盘表面堆焊材料和无石棉刹车块摩擦材料，并通过变温摩擦磨损性能实验，研究了刹车副的摩擦学性能。

An experiment is made on dynamic friction of HTSD linear roller guide, a comparison is made between the experimental result and the theoretical calculation and an analysis is made on possible causes that would result in fluctuation of friction of the guide.

文章对HTSD直线滚动导轨副的动态摩擦力波动进行了实验研究，并将实验结果与理论计算进行了比较，分析了引起导轨副摩擦力波动的可能原因。

V.P. VISIT \ 副总统来访 Vice President Joe Biden met kids at the University of Pennsylvania in Philadelphia Friday before chairing a middle-class task force on "green" jobs.

上周五在费城，美国副总统拜登在宾夕法尼亚大学见到了一群孩子。之后他将主持一个由中产阶级参加的有关&绿色&工作的活动。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。