现场动平衡技术在生产中的应用

利用美国恩泰克公司提供的DP1500数据采集仪及现场动平衡软件,以实例说明了现场动平衡技术在锅炉引风机、排粉风机、电动机、机泵等转动设备不平衡故障排除中的应用,介绍了不平衡故障的识别方法,揭示出该技术在生产中的实用性、先进性和经济性.     

关于公关文秘专业实习实训教学的探讨——以桂林航天工业高等专科学校为例

桂林航专公关文秘专业在实习实训教学方面做得是比较成功的,论文从构建学生整体实践能力培养目标体系、"双师"型教师队伍建设、校内实习实训基地建设、校企合作四个方面进行研究分析。     

从认知角度看英汉"爱情"隐喻的异同

隐喻是人类认知的工具,它深深根植于人类的语言、思维和文化中。爱情,这种人类共同的情感,具有异常丰富的内涵,常常借助隐喻才得以表达。由于历史文化环境等的差异,中英中关于爱情的隐喻也大相径庭。本文通过分析大量中英文有关爱情的隐喻,从认知语言学的角度探讨爱情隐喻的异同。     

数学教学中培养创造能力的探索

本文结合多年教学实践，对激发学生的创造意识，培养发散思维，运用创造技法等方面进行了探索。     

The Electron Radiation Belt

Electron radiation belts can change dramatically in a few seconds or slowly over years. Important issues in understanding such changes are: (1) What is the source of electrons in the radiation belts? (2) How important is radial diffusion compared to other radial transport mechanisms? (3) What are the detailed changes in the magnetosphere that produce radial diffusion? (4) Why is the response of the electron radiation belt to changes in the solar wind different from that of substorms and of the ring current? (5) Are processes other than radial transport, such as wave-particle interactions, important in energizing electrons in the radiation belts?     

基于DRFM的引信干扰技术研究

根据脉冲测距引信的工作原理和DRFM的基本功能,设计了DRFM结构,DRFM通过对脉冲延时,达到对脉冲测距引信进行干扰使其早炸的目的,并提出了延时参数的确定原则。     

凸多面体的一种快速消隐算法的研究

论文讨论了根据凸多面体必要的几何信息和拓扑信息显示消隐处理后的图形算法。该算法允许用户利用变换(旋转、平移、投影、透视)功能从不同方位显示消隐后的凸多面体,并对自隐藏面消隐、物体间相互遮挡的隐藏线的消隐及相贯物体的消隐作了研究,显示的凸多面体消隐完全,交互性能好,坐标变换方便。     

High speed driving of a gain-switched laser diode with anexponential transmission line

With the increase of information capacity of an airborne system, high speed driving of laser diodes have been of interest. In order to match the low resistive LD, proposed in this paper is an exponential transmission line, which is used as preshaping to compensate the pattern effect in gain switching of laser diodes. It also will be used to overcome the effect of parasitic elements in high speed driving to improve the rise and trail edges of the output waveform. An accurate circuit model of the exponential line for the PSPICE program has been developed and simulations are conveniently carried out by employing PSPICE     

用于高压动态校准的快开阀装置

介绍一种高压快开阀装置。它可产生３７０ＭＰａ上升时间小于２０μｓ的阶跃压力，用于对高压传感器进行动态校准。     

复合材料层板中就位横向拉伸强度的研究

本文利用弹性力学和断裂力学方法对纤维增强复合材料的横向拉伸强度进行了分析，其中考虑了９０度开裂层厚度和开裂邻层的约束效应的影响，推导出正交各向异性对称铺层中昨合就位横向拉伸强度的数学表达式，得出开裂层的厚度和约束邻层铺设角对就位横向拉伸强度都有影响的结论，理论计算与Ｆｌａｇｇｓ实验结果吻合较好。