中轴

Regarding the frequent occurrence of speed stalling of boiler axial flow primary fan in the operation of 600 MW unit in China,the cause of speed stalling was analyzed based on the actual measured data.

针对目前国内600 MW大容量机组锅炉轴流式一次风机运行中失速事故频繁发生的问题，在了解造成轴流式一次风机失速原理的基础上，根据实测数据对一次风机失速原因进行分析。

As thin-walled bars, stiffener s subjected to the axial pressure in ship panels may trip around their roots.

作为薄壁杆件，船体加筋板架中的加强筋在轴向压力的作用下可能发生绕定轴的侧向屈曲。

Establishing a geometric model of pump shaft with Three-dimensional modeling software and considering force condition to determine the boundary Conditions, after a reasonable simplification, then the modeling is inputted for ANSYS strength analysis combined with the traditional strength theoretical calculations of the shaft to get the result of stress and strain calculations and static stress and strain diagram.

应用三维造型软件建立了泵轴的几何模型，经过合理的简化，分析受力情况确定边界条件，在ANSYS软件中进行分析，结合传统的强度理论计算对泵轴的强度进行了计算和求解，得到了应力和应变的计算结果。

The influences of the nonlinear clearance-excitation fluid force of turborotor on the dynamic behaviors of rotor's axial rub-impact are insignificant. The only effect is the appearances, in the axial response, of the higher order superharmonic components of even-time working frequency at low rotating speeds.

分析表明，非线性涡轮叶尖间隙流体激励力对转子轴向碰摩的非线性特性影响不很明显，只是在低转速时轴向振动碰摩响应中会出现更高阶的偶数倍频的超谐波成分。

Moreover, the hot compressive deformation behavior of the RS/PM AZ91 magnesium alloy and AZ91 alloy matrix composite were also investigated, the conclusions are drawn as follows:1. The processing parameters of the atomization-twin rolls quenching technology were optimized as follows: the diameter of the nozzle 1mm, the wheel velocity 25m/s, the pressure of atomization gas 0.3MPa and Ar gas for melt injection 0.1MPa. The RS AZ91 alloy flakes exhibited fine and uniform microstructures. When the flakes were extruded at 673K, extruded velocity of 0.1mm/min and extrusion ratio of 25:1,the magnesium alloy rods with clean surface, uniform dimension and excellent mechanical properties were obtained.2. The RS AZ91 magnesium alloy powders prepared by atomization-twin rolls quenched technology exhibited fine equiaxed grains with the grain size of 1-3μm, the phase constituent included supersaturate solid solution phaseα-Mg and miner fineβ-Mg_(17)Al_(12) phase. The as-extruded materials also exhibited equiaxed grains with the size of 5-7μm and a large number of fineβ-Al_(12)Mg_(17) and fewer AlMg_2Zn phases were detected in the alloy.

本文还研究了快速凝固/粉末冶金AZ91镁合金热压缩变形流变应力行为，快速凝固/粉末冶金法原位生成Mg_2Si增强AZ91镁基复合材料，经过系统的研究，获得如下结论：1、雾化-双辊急冷法在下列工艺参数组合下：双辊线速度25m/s；喷嘴直径1mm；熔体压射压力0.1MPa；雾化气体压力0.3MPa。，可获得宏观尺寸细小、微观组织均匀细小、综合性能优良的的快速凝固AZ91镁合金细碎箔带，快速凝固箔带在挤压温度为673K、挤压速度为0.1mm/min，挤压比为25：1时，可获得的外表光洁、尺寸均匀、组织性能优异的镁合金棒材。2、雾化-双辊急冷法制备的AZ91镁合金粉末态为细小等轴晶组织，晶粒尺寸1-3μm，组织为α-Mg过饱和固溶体和微量的细小β-Mg_(17)Al_(12)相组成；粉末挤压棒材为等轴晶组织，晶粒尺寸5-7μm，组织中含有大量细小的β-Al_(12)Mg_(17)以及AlMg_2Zn析出相，室温力学性能，抗拉强度383MPa，屈服强度275MPa，断后伸长率7.5%。

This new analysis is good for the combination and unification between drive shaft and suspension's hard points, which plays a significant role in developing cars.

这种新分析方法有利于将驱动轴的选型与悬架硬点的确定工作有效统一结合起来，对整车开发中的驱动轴布置具有较好的指导作用。

Complementing the overall look of the Moore-Speed World Champion Edition Cyclone are colour-coordinated pivot blocks, middle blocks, washers, sway bar pivot balls, titanium turnbuckles, hex clamp wheel hub, serrated wheel nuts and more.

优势互补的整体外观的Moore -速度世界冠军版气旋是颜色的协调枢轴座，中座，洗衣机，摇动杆枢轴球，钛turnbuckles ，十六进制钳轮毂，锯齿轮坚果和更多。

Numerical simulation results reveal that the tangential, axial velocity and radial velocity in the annular space are asymmetric distribution, and basically symmetric distribution in the separation space.

在旋风分离器的三维速度中，切向速度在环行空间具有明显的非轴对称分布，向下进入分离空间后很快发展为轴对称分布；轴向速度和径向速度在环行空间存在一定的非轴对称性，而到分离空间后基本上是轴对称分布了。

Based on the torsional oscillation theory of diesel shafting,this article analyses the measured signal values of measuring power by shaft s deformation.

在柴油机轴系扭振理论的基础上对通过轴应变来测功的测量信号量进行分析，并通过实例证明了这种分析在对测量信号量进行数学处理中的重要意义。

Then we use IEEE First Benchmark system model and the 500kV system which contain 500MW and 600MW turbo-machines, as typical examples, the shaft systems without exciter in these examples are also analyzed on its impact on torsional oscillation.

首先对采用静止励磁方式的汽轮发电机轴系建模进行了说明；然后以IEEE次同步谐振标准模型和东北电网中伊敏电厂计划安装的500MW和600MW汽轮发电机组为典型算例，研究了改用静止励磁方式对轴系扭振的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。