偏心轴

Software, and simulated by Monte Carlo method. The simulation results are conducted by descriptive statistics. Two "drop-in" assembly design lens groups were studied to calculate the stack-up element tilt and decenter within a cell and the resultant deviations of the optical axes away from the mechanical datum axis. The results indicate that the opto-mechanical tolerance model can analyze the critical to quality parameters of a lens system. As a result, the performance of the lens system can be anticipated by the opto-mechanical tolerance model before mass production.

戊n体编辑，并以蒙地卡罗方法模拟，模拟结果以叙述统计呈现；最后以两个"投入式"组立设计的镜群组为案例，计算镜片在镜筒内的累积偏心角度公差、偏心距离公差及镜片光学轴的累计偏移量，其结果显示该模型可模拟一个镜头系统的关键品质参数；所以，镜头系统的性能在大量生产之前可藉本光机公差模拟模型预测其品质与良率。

With establishing dynamic model of gun system, the effects of stiffness and damping of the main parts, i.e. elevating mechanism, trail, and soil as well as the effects of parity of recoil mass and parity of trunnion position of firing stability are systematically studied.

在建立火炮动力学模型的基础上，利用虚拟样机技术系统地研究了高低机刚度和阻尼、大架刚度和阻尼、土壤介质刚度和阻尼、后坐质量偏心和耳轴位置偏心对火炮射击稳定性的影响。

The coming forth of virtual prototyping technology presents a new approach to study gun stability, and based on establishment of dynamic model of selections of structure parameters, the effects of stiffness and damper of elevating mechanism, stiffness and damper of trail, stiffness and damper of soil, parity of recoil mass and parity of trunnion position on firing stability are first studied with virtual prototype of gun in this paper. An improved equation of sensitivity analysis is provided, and the important degrees of factors with different dimensions can be compared.

虚拟样机技术的出现为火炮射击稳定性研究提供了新的方法，文中在建立火炮动力学模型的基础上，通过选取火炮结构参数对火炮射击稳定性进行研究，利用虚拟样机分析高低机刚度和阻尼、大架刚度和阻尼、土壤介质刚度和阻尼、后坐品质偏心和耳轴位置偏心对火炮射击稳定性的影响。

Software, and simulated by Monte Carlo method. The simulation results are conducted by descriptive statistics. Two "drop-in" assembly design lens groups were studied to calculate the stack-up element tilt and decenter within a cell and the resultant deviations of the optical axes away from the mechanical datum axis. The results indicate that the opto-mechanical tolerance model can analyze the critical to quality parameters of a lens system. As a result, the performance of the lens system can be anticipated by the opto-mechanical tolerance model before mass production.

戊n体编辑，并以蒙地卡罗方法模拟，模拟结果以叙述统计呈现；最后以两个&投入式&组立设计的镜群组为案例，计算镜片在镜筒内的累积偏心角度公差、偏心距离公差及镜片光学轴的累计偏移量，其结果显示该模型可模拟一个镜头系统的关键品质参数；所以，镜头系统的性能在大量生产之前可藉本光机公差模拟模型预测其品质与良率。

During oil production, pumping rod is eccentric in the long oil tube, in which flow of the swabbed fluid can be regarded as an unsteady flow of second-order fl.

在采油过程中，由于油井较深的缘故，抽油杆在油管中是处于偏心位置的，可以把聚驱井抽汲液在井筒中的流动视为二阶流体在内管做轴向往复运动的偏心环空中的非定常流动。

The running quality of the wind tunnel power shaft system has a decisive influence on the efficiency and performance. With increase of the runtime of the shafting, rotor parts have inevitable mass eccentricity, which obviously strengthens the coupling function of torsional and bending vibration.

风洞动力轴系的运行品质对风洞的效率和性能有决定性的影响，随着轴系在役运行时间的增加，转动部分多数会有质量偏心现象出现，这使得轴系的扭转振动与弯曲振动的耦合作用明显增强。

The hollow-axis motor drives the offset nozzle and rotates the arc on the tip of wire at high speed,so as to ensure enough penetration into the sidewalls in narrow gap welding .

在该系统中，焊丝穿过电机的空心轴后从导电嘴的偏心孔送出，电机带动导电杆和偏心导电嘴旋转，从而使焊丝端部的电弧以一定直径高速旋转，以保证窄间隙焊接接头具有足够的侧壁熔深。

In order to achieve our aim and to avoid aforementioned problems, the invention consists of a massage device intended for a massage chair, the massage unit of which has a support for an eccentric rotating shaft equipped with a coupling hole to said shaft and which is connected by way of an articulation point to a massage wheel support that has an upper wheel and a lower wheel.

为了实现本发明的目的并避免上述问题，本发明由一种用于按摩椅的按摩装置组成。该按摩装置的按摩单元具有用于偏心旋转轴的支架，该偏心旋转轴支架配备有联接到所述轴的联接孔并通过铰接点连接至具有上轮和下轮的按摩轮支架。

There are massage devices for massage chairs that have an eccentric rotating shaft support equipped with a coupling hole to said shaft and joined by means of a point of articulation to a massage wheel support.

已存在具有偏心旋转轴支架的用于按摩椅的按摩装置，所述偏心旋转轴支架配备有联接到所述轴的联接孔并通过铰接点连接到按摩轮支架。

Equivalent imperfections are provided, which can be used directly as an eccentricity of the axial force in calculating the design moment It is permissible to construct simply a linearised version of the interaction diagram for cross-sectional resistance to combinations of axial compression and uniaxial bending moment on a composite section.

登录 |阻力的屈曲由于不完善的减少可能是取自EC3系列屈曲曲线。等效缺陷提供，它可以用来作为计算的轴向力设计的时刻直接偏心这是允许的构造简单组合截面上的一个横截面的抗轴向压缩和单轴弯矩组合交互图线性化版本。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。