轴向的

This method is clear in concept, calculated simply , results accurately in calculation, and used on site conveniently, which provides scientific fact for the correct discription of casing string flexural equation ,accurate calculation of casing flexural deform, and reasonable determination of centralizer position.

但这种计算模式都是基于轴向力为零，只考虑了套管自重引起的横向均布荷载对挠曲变形产生的影响，因此，这种方法仅仅适用于计算"中和点"附近套管柱挠曲变形量这种特殊情况。更加普遍的情况是，套管不仅受自重引起的横向分力的影响，还受轴向力的作用。

By the comparison of electronic spectrum and Z-scan of different substituted MPc and MNc, the peripheral substituted MNc had better nonlinear optical properties. It provided a new method to the improvement of the performance of reverse saturable absorption of the laser protective materials.

对不同金属轴向取代的萘酞菁化合物的电子光谱和Z-扫描进行了横向比较，并对相同取代基、金属轴向取代的酞菁化合物和萘酞菁化合物进行了纵向比较，发现周围取代的金属萘酞菁化合物具有较好的非线性光学性能，为提高材料的反饱和吸收性能提供了一种新的途径。

Firstly,the rule and cause of rupture failure for the cardan shaft of the DF 4D type freight diesel locomotive are discussed and Then,the methods on how to deal with the rupture failure of the cardan and the other failures resulted from the different small fuel quantity of different injection pump equipped on the same diesel engine are introduced.

阐述了东风4D型货运机车万向轴断裂的规律，进行了原因分析，介绍了万向轴断裂事故处理的实例，并对同台柴油机上各喷油泵小油量相差大易引起的其它后果进行了分析，最后提出了具体的预防措施及操作程

Test measure using in the test for axial force is different from previous measure, which overcome effect of friction between plunger piston bending work roll and chock in dynamic test.

轴向力测试采用了不同于以往的方法，直接测出作用于工作辊的轴向力，克服了动态过程中弯辊柱塞与轴承座之间的摩擦影响，还可反映出圆周方向的分布。

The math model of the movement,flux and control system of position pump was established by analyzing its working principle,and its hydraulic system simulation model was established based on AMESim.The pressure and flux pulsation of the position pump was analyzed,and the pressure and flux was calculated by simulation when there are sign of wear for the position pump and system flux change.

分析了恒压力轴向柱塞泵的工作原理，推导并建立了液压泵压力流量和压力调节机构的数学模型，并在此基础上以AMESim工程软件为平台建立了轴向柱塞泵的仿真模型，分析了压力流量脉动状况并对液压泵在内部磨损和系统流量变化两种情况下的压力流量进行了仿真计算，对两种情况下泵的工作情况进行分析比较，为液压脉动抑制和故障分析提供了参考。

Engineering College, Air Force Engineering University, Xi'an Shaanxi 710038, ChinaAbstract: The math model of the movement, flux and control system of position pump was established by analyzing its working principle, and its hydraulic system simulation model was established based on AMESim. The pressure and flux pulsation of the position pump was analyzed, and the pressure and flux was calculated by simulation when there are sign of wear for the position pump and system flux change.

分析了恒压力轴向柱塞泵的工作原理，推导并建立了液压泵压力流量和压力调节机构的数学模型，并在此基础上以AMESim工程软件为平台建立了轴向柱塞泵的仿真模型，分析了压力流量脉动状况并对液压泵在内部磨损和系统流量变化两种情况下的压力流量进行了仿真计算，对两种情况下泵的工作情况进行分析比较，为液压脉动抑制和故障分析提供了参考。

As a first step to industrialize this focusing coal liquefaction technology, it is essential to study the multiphase transport characteristics of this new type reactor. In this paper, mass transfer and mixing characteristics of a three-phase continuous loop reactor with a concentric draft tube were measured by the dynamic dissolved oxygen and saturated KCl solution pulse trace methods,with glass beads as solid phase, air as gas phase and tap water as liquid phase, respectively.

本文在同心内置Φ 0.14×1.5m导流筒的Φ 0.2×2.5m有机玻璃环流反应器中，以空气和水为气、液相，玻璃珠为固相，分别利用动态溶氧法与饱和KCl脉冲示踪法测量了液相体积传质系数和轴向分散系数，考察了表观气速、进料浆速、固含率、固相颗粒直径、液相表面张力以及操作方式对上述两个传递参数的影响规律，并将实验结果关联为量纲为1关联式；同时，根据环流反应器的结构特点，建立了传质系数分区模型和轴向分散系数分区模型且分别获得了解析解，对床层传质和混合的不均匀性做了理论分析。

Based on theory and test, finally, the measurements which may reduce axial force are given, for example, strengthening the management of size and clearances in roll systems and maintenance of roll bearings, limiting rolling technological conditions, increasing the axial flexibility, releasing axial binding forces and establishing axial flexible lock mechanisms, etc.. So it provides the constructive suggestions for preventing from damage of roll bearings.

在理论分析和实验验证的基础上，分析了轧辊轴承的受力特点和破坏原因，提出了降低轴向力的对策，其中包括加强尺寸及间隙管理、限定工艺条件、加强轴承的维修与管理等&硬&性措施，以及增加辊系轴向柔度、施放约束、建立柔性锁紧机构等&软&性措施，为现场解决轴承损坏问题提供了建设性参考意见。

The performance curves of the experimental fan have been obtained and the flow field has been measured at the best efficiency point of each setting angle, in fixed plane downstream the rotor with a constant temperature hot-wire anemometer and a periodic multisampling and averaging technique by an on-line microcomputer.

对轴流式通风机在不同安装角时的流场变化进行了实验研究，得到了通风机的总性能曲线；并用固定在转子前、后测量平面的热线，测量了最高效率点处不同安装角时叶片通道进、出口轴向和切向速度的分布，从而能够清楚地了解到，通风机在安装角变化时，叶片通道进、出口截面流动结构的变化。

In this paper, we have derived the analytical formulae for the calculation of radial and axial rigidities of the flexible suspension system.

本文研完了这种支承系统的径向和轴向刚度的计算方法，并得出了计算支承的径向和轴向刚度的公式。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。