大轴

Driving system is one key of it, and it needs big torque and endures biggish shaft power.

传动系统是双螺杆磨浆机的关键部件，要求输出较大的扭矩，并承受较大的轴向力。

On strength computation,the finite element models of rotating mirror were established according to the real structure of the mirror,and the rotating three-faced beryllium mirror were analysed.Results display that the surface deformation magnitude of the mirror is approximately 0.334 6 μm,and the maximum stress is 0.204 GPa at 600 m/s of edge linear speeed.The regions of maximum stress are on the axial hole and symmetric to symmetrical planes of mirror body,and keep beelines to surfaces.On the modal analysis,the results show that the first and second modals of bending vibration exist around 3.4×105 r/min and 6.6×105 r/min,which appear binate and orthogonal respectively,and another modal belongs to the first torsional vibration that occurs by 5.13×105 r/min.

运用该方法得出转镜镜面变形量、内部应力分布和振动模态参量的定量数值：在边缘线速度600 m/s下，三面体铍转镜的最大变形量为约0.334 6 μm；最大应力0.204 GPa，位于轴孔附近并与镜面距离最短处；两个在互相垂直平面内的一阶弯曲振动模态发生在3.4×105 r/min附近，一阶扭振点位于5.13×105 r/min附近，两个二阶弯曲振动点位于6.6×105 r/min附近。

RAW Height Map#define STEP_SIZE 16 // Width And Height Of Each Quad#define HEIGHT_RATIO 1.5f // Ratio That The Y Is Scaled According To The X And Z HDC hDC=NULL;// Private GDI Device ContextHGLRC hRC=NULL;// Permanent Rendering ContextHWND hWnd=NULL;// Holds Our Window HandleHINSTANCE hInstance;// Holds The Instance Of The Application bool keys[256];// Array Used For The Keyboard Routinebool active=TRUE;// Window Active Flag Set To TRUE By Defaultbool fullscreen=TRUE;// Fullscreen Flag Set To TRUE By Defaultbool bRender = TRUE;// Polygon Flag Set To TRUE By Default 这里我们用了一个字节数组g_HeightMap

在这篇教程中图的大小是1024×1024.STEP_SIZE是我们用来绘制地形的正方体的大小，减小步长，地形图就会变得更加平滑。有一点很重要，步长越小你的程序所做的工作就将越多，特别是在使用大的高度图时。HEIGHT_RATIO用来缩放地形的Y轴的值，较小的HEIGHT_RATIO可以用来绘制较平的山，较大的HEIGHT_RATIO用来绘制较高的山。在下面的代码中，你会看到变量bRender。如果bRender的值为真，我们就填充模式绘制多边形，如果它的值为假，那么我们就用线框模式绘制地形。

Methods Seventy-eight adult female PVGrats were divided into experimental group (n=60) and control group (n=18), intraneural injection technique was used to supply three kinds of NO donors with different half-life(DETA NONOate, DPTANONOate and Spermine NONOate) or saline into the rat sciatic nerve subperineurally under light microscope. At the 1th,2th,3th,7th,and 14th day of duration after sciatic nerve injection, a segment of injected sciatic nerve was taken out and embedded it in TAAB resin after tissue processing. Then it was cut into thin layers (1μm) and the histological changes were observed under high power microscope, meantime the number of degenerated axons were counted.

选择78只雌性PVG大鼠，分为实验组和对照组，以在体神经内微注射实验方法，将三种半衰期不同的NO供体(DETA NONOate，DPTA NONOate和Spermine NONOate)及生理盐水分别注入大鼠左侧坐骨神经的神经束膜下，于注射后的不同时间(1天、2天、3天、7天和14天)取出注射部位的坐骨神经，经组织学处理后做成树脂包埋块，以超薄切片机切片，然后在高倍显微镜下观察并计数神经横断面的变性轴突数目。

AngleⅢmalocclusion with TMD Compared with AngleⅢmalocclusion and thenormal group. In AngleⅢmalocclusion with TMD. there have greatly significant variations,transversely. During mandible open and close, the protrusion and reptrution in anydirections and medio movement in no-work sides,the range of condyle pathways of AngleⅢmalocclusion with TMD are bigger than the AngleⅢmalocclusion but shorterthan that of the normal group.

4在AngleⅢ类错伴TMD组和对照组AngleⅢ类错(牙合组、正常组相比：各项运动在Y轴上位移变异最大，在开闭口运动和前伸后退及侧方运动非工作侧中髁突运动最大位移范围基本上是正常组＞AngleⅢ类错伴TMD组＞AngleⅢ类错组。

In the parasternal four chamber view or the main artery of the short axis view,Continuous Doppler spectrum showed tricuspid regurgitation,Measurement of the maximum tricuspid regurgitation velocity,Used to estimate the maximum pulmonary artery systolic pressure.

在胸骨旁四腔切面或大动脉短轴切面，应用连续多普勒显示三尖瓣返流频谱，测量三尖瓣最大返流速度，用以估测最大肺动脉收缩压。

Hangzhou Tianma Textile Machinery Co., Ltd. is the earliest in the non-woven fabrics for professional research and Production business, products related to the scope of the various professional rapier spinning Poncirus the field of production, from the beginning of the GA731 radius of the rapier-based development to the present HGA732 series looms, not only to meet High-end textile fabric weaving, and particularly good at some special professional-woven fabric, such as: a common standard loom, the production of silk yarn and high-precision electronic fabric of electronic coiling off high-end electronic Dobby looms, production All kinds of terry cloth towel loom, wide loom (Reed said the biggest increase was 4.6 meters), all kinds of industries with a cloth loom, Shaluo fabric looms, the Zhuang Shibu electronic Jacquard loom, the production of different warp The double-shaft looms, but also provide root Zelkowa acuminata special requirements of large package of cloth, Vol device as a whole and not for the cheese-and absorbed by the device.

杭州天马纺织机械有限公司是国内最早从事无梭织机专业研究与生产的企业，产品范围涉及到剑杆织机的各种专业纺枳品生产领域，从最开始的GA731桡性剑杆织机为基础发展到现在的HGA732系列织机，不但能满足高档纺织面料织造，并且特别擅长于一些特殊专业织物的制织，如：通用的标准型织机、生产真丝与高支纱等精细织物的电子卷取电子送经电子多臂高档织机、生产各种毛圈织物的毛巾织机、宽幅织机（最大公称筘幅为4.6米）、各种产业用布织机、纱罗织物织机、电子大提花的装饰布织机、生产不同经纱的双层经轴织机等，还可根椐特殊要求提供大卷装的机外卷布装置和用于不整经的筒子经架与匀经装置。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

In the parts pulley of the belt conveyor,in the connection of pulley shaft with pulley hub,the even key commonly is used.But for the belt conveyor with long distance,big belt width,big carrying capacity,high speed running,this kind of construction of pulley can't already satisfy requestion.

带式输送机是煤矿系统中主要物料输送设备，在带式输送机的部件滚筒中，滚筒轴和筒体轮毂一般采用平键联接，但对于长距离、大带宽、大运量、高速运行的带式输送机，这种结构的滚筒已不能满足要求。

The results show that the maximum compression load increases gradually with the increase of the number of compression. The effective strain distributes in the form of ringwise, the maximum lies in the center and the minimum at the surface. The damage is inclined to appear at the drum shape perpendicular to the longest axis.

结果表明，随压缩次数的增加，最大压缩载荷不断增大；坯料内部等效应变分布呈环状，中心部位最大，外部最小；坯料破坏易于发生在与压缩后坯料最长轴垂直的侧表面鼓形处。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。