等轴

Focused on many problems existing in pressure control system of drilling pipe friction welding,such as high failure rate and poor amenability,the basic principles of friction welding and electro-hydraulic proportional technique were briefly described.

针对焊接钻杆连续驱动摩擦焊机采用开关阀组成压力控制系统存在故障几率高、可控性差等问题，将电液比例控制技术应用在摩擦焊压力控制中，实现了摩擦焊轴向压力闭环控制、滑台进给速度的开环控制；可对摩擦焊机主轴速度、轴向压力、轴向缩短量、主电机电流、油温等进行实时检测。

The lesion, the changes of activity of cholinesterase and acid phosphatase of motor neurons in lateral nucleus of spinal cord anterior horn, the function of axoplasm transportation and nerve conduction, the regeneration of axons and myelin sheath, and the recovery of sciatic nerve function were examined at 7, 14, 30 and 90 days intervals after operation, using Nissl and enzyme histochemistry staining, electrophysiological technique, hydrogen-peroxide oxidoreductase retrograde trace method, axon image analysis, and measurement of sciatic function index. The spinal cord anterior horn of injury side was compared to the correspondence region of spinal cord.

分别于术后7、14、30和90d应用酶组织化学方法、电生理方法、HRP （hydrogen-peroxide oxidoreductase）逆行示踪方法、轴突图象分析方法以及坐骨神经功能指数（sciatic nerve function index，SFI）测量等方法检测坐骨神经损伤后对应脊髓神经元的存活率、神经元胞体酶系变化、损伤神经在轴浆运输、电传导以及轴突、髓鞘再生等方面的恢复情况，探索外周神经损伤后OECs及几丁质对神经元的保护作用以及对新生神经功能恢复的作用，为外周神经损伤的治疗提供新的理论基础。

Based on that,the problem of reconstruction is studied according whether the axis-track surface is developable or not,and some valuable conclusions are derived.

在得出包络面、轴迹曲面、等效轴迹曲面互为等距曲面的结论的基础上，研究了轴迹曲面可展与不可展两种情况下的非等径包络重构问题，得到了一些有价值的结论。

In static design of the control system, the influences of three-axle unintersect, unverticality and disturbance moment to the simulator's position accuracy is analyzed, and the error analytic formula is suggested. The influence of system static and dynamical friction moment, distinguishability of D/A convertor to the low-speed characteristic of the simulator is also analyzed.

在控制系统的静态设计过程中，分析了三轴转台的三轴不相交度、三轴不垂直度和干扰力矩等对转台位置精度的影响，并求出了误差的解析表达式，分析了系统的静、动摩擦力矩、D／A转换器的分辨率等对转台低速特性的影响。

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Connect joint of mechanical seal with shaft seal water pipeline (For newly installed shaft seal water pipelines, please clean up or rinse out sundries such as welding dregs, sand which are remnant in pipelines in advance). Start shaft seal pump, unclose shaft seal pipeline valve and turn pump shaft by manpower, if leakage, that indicates dunghill exist on shaft seal end-cover, here gland bolts should be loosened to wash mechanical seal with clean water and then impact gland.

将机械密封的接口连通轴封水管路(新安装的轴封水管路应事先将残存在管路内的焊渣，泥沙等杂物清理或清洗干净)，启动轴封泵，打开轴封水管路阀门，人工转动泵轴，如有滴漏现像说明轴封端面有脏物存在，应将压盖螺栓松开用清水冲洗机械密封后，再将压盖压紧。

Connect joint of mechanical seal with shaft seal water pipeline (For newly installed shaft seal water pipelines, please clean up or rinse out sundries such as welding dregs, sand which are remnantin pipelines in advance). Start shaft seal pump, unclose shaft seal pipeline valve and turn pump shaft by manpower, if leakage, that indicates dunghill exist on shaft seal end-cover, here gland bolts should be loosened to wash mechanical seal with clean water and then impact gland.

将机械密封的接口连通轴封水管路（新安装的轴封水管路应事先将残存在管路内的焊渣、泥沙等杂物清理或清洗干净），启动轴封泵、打开轴封水管路阀门，人工转动泵轴，如有滴漏现像说明轴封端面有脏物存在，应将压盖螺栓松开用清水冲洗机械密封后，再将压盖压紧。

Calculates the coordinates of the spindle and drive shaft and checking the center distance, determined department spindle must use dislodges the gear.

根据柴油机齿轮室盖的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床；为确保加工精度，采用&一面两销&的定位方案；为实现无级调速，安全可靠，选择液压滑台；根据零件的大小及被加工孔的位置确定主轴箱的轮廓尺寸；由加工工艺选择滚珠轴承主轴，通过计算扭矩确定主轴和传动轴的直径；齿轮的模数是通过类比法确定；齿轮齿数和中间传动轴的位置是由&计算、作图和多次试凑&相结合的办法确定；计算主轴、传动轴的坐标并进行中心距验算，确定部分轴上需采用变位齿轮；轴上的齿轮套、键等零件按轴号选取相应的标准件。

The structure brief introduction the dense thick liquid pump of one stud of i-1b s series is formed by four parts electromotor , shaft coupling , pump and bases motive force joining in marriage usefulness uses y s series asynchronous electromotor of three-phase the shaft coupling uses the water pump with the paw mould elasticity shaft coupling the pump by the pump shell , become hollow inside axle and universal twists joints and winds axle , stud , bush and axle seal and package places and goes out the material mouth etc and forms , and the section of stud is the oval for round and bush section , and his interior surface is the duplexing spirals faces .

结构简介 i-1b系列单螺杆浓浆泵由电动机、联轴器、泵和底座四个部分组成。配用的动力采用y系列三相异步电动机。联轴器采用水泵用爪型弹性联轴器。泵由泵壳、空心轴、万向绞接头、绕轴、螺杆、衬套、轴封装置和出料口等组成，螺杆的断面为圆形、衬套断面为椭圆形，其内表面为双螺旋面。

Including linear bearings, linear guide, straight axle, ball screw, spline shaft, oil bearing, bearing joints, locking nut, coupling, pneumatic / hydraulic / electrical devices, X-Y-Z platform, sliding Unit, cross-roller guide, all kinds of casters, as well as various types of high-speed motor with frequency, widely used in woodworking machinery, and other carvings of CNC machine tools on the main axis, its high-performance, low prices, is your An ideal choice.

包括直线轴承、直线导轨、直线轴、滚珠丝杠、花键轴、含油轴承、关节轴承、锁紧螺母、联轴器、气动／液压／电器元件、X —Y—Z平台、滑动单元、交叉滚子导轨、各种脚轮等，及各种类型的高速同频电机，广泛用于木工机械、雕刻机等CNC数控机床的主轴上，其性能高，价格低，是您的理想选择。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。