电磁

The preparation of electromagnetic shielding concrete adulterated short carbon fibers and graphite respectively have been introduced in this paper.

介绍了分别掺杂短碳纤维和石墨的电磁屏蔽混凝土的制备，研究了短碳纤维和石墨的含量对混凝土低频电磁屏蔽效能的影响，最后分析了短碳纤维的加入对石墨混凝土电磁屏蔽性能的影响机理，为将来设计高性能低频电磁屏蔽混凝土提供了依据。

In order to master the technical characteristic of soft contact EMCC, and to certain the optimum electromagnetic processing parameters of soft contact EMCC, the combination of theoretical study and experimental study of 100mm×100mm billet casting processing by imposing 20kHz high frequency electromagnetic field were investigated.

为了掌握软接触电磁连铸的技术特征，确定方坯软接触电磁连铸所需最佳电磁工艺参数，本文采用理论和实验研究相结合的方法，对高频磁场（20kHz）方坯（100mm×100mm）软接触电磁工艺进行研究。

However, electronic elements are easily interfered or even destroyed by many electromagnetic pulses. Therefore, it is very meaningful for researches on electromagnetism compatibility in buildings as well as other related topics, including simplified equivalence of complicate structural ferroconcrete walls.

但是电子设备中的电子元器件很容易受到各种电磁脉冲的影响甚至毁坏，所以对建筑物电磁屏蔽和电磁兼容、机箱的电磁兼容和复杂结构钢筋混凝土墙体等效成容易建模的素混凝土墙的研究，很有意义。

The basic solutions were defined based on local coordinate system, and then the coordinate transform relation between the static and dynamic characteristics of magnetic bearing with arbitrary structure and the basic solutions were deduced.

研究了电磁轴承静动特性的计算方法，定义了基于局部坐标系的电磁轴承静动特性基础解，推导了任意磁极结构的电磁轴承动力学特性与基础解之间的坐标转换关系；在此基础上提出了利用基础解计算任意磁极结构的电磁轴承静动特性的方法，该方法简捷、快速，是电磁轴承静动特性计算的一套规范化、标准化的方法。

The results show that the equiaxed zone ratio of the casting billet is greatly increased,with its soidification structure is obviously improved,and the momentum values of the electromagnetic forces both parallel to and perpendicular to the direction of the traveling magnetic field pulsate periodically with time.

采用三相通入不同电流的非平衡线性电磁搅拌技术进行了铸坯的静态浇铸实验，并对电磁搅拌过程中钢液内的电磁力各分量的瞬时值进行了理论分析·结果表明，当采用将电磁搅拌器的三相通入不同电流的非平衡线性电磁搅拌时，在钢液内所产生的电磁力是脉动的，其大小呈周期性变化，尤其是垂直于磁场运动方向上的电磁力，其脉动的幅度很大·由此认为，当采用将搅拌器的三相通入不同电流的非平衡线性电磁搅拌时，所产生的垂直于磁场运动方向上的脉动电磁力是提高等轴晶比率，改善铸坯凝固组织的一个重要原

Numerical simulations were done for a bistable latch valve of the system by FLUENT, and three groups of datum for different fluids were obtained with the same effective exit sectional area. Besides, a static mathematic model for the electromagnetic valve was established based on the obtained datum. Secondly, the motion of the valve spool was realized by UDF file in FLUENT. Three kinds of motions, uniform, acceleration and motion driven by the coupling effect of the liquid resistance and the electromagnetic force, were calculated and compared. The dynamic characteristic of the electromagnetic valve was obtained by analyzing the relationship of the mass flow rate of the inside flow field of the electromagnetic valve, the change of the drop pressure of the passageway of the valve, and motion time.

并针对系统中的某双稳态电磁阀，使用商用CFD软件FLUENT对其进行内部流场的数值模拟，通过使用不同流体介质，不改变阀门有效出口截面积的情况下，分析得到的三组数据，建立了该电磁阀的静态数学模型；通过编写UDF文件，实现对阀芯运动方程的控制，在阀门做由闭合到开启、开启到闭合运动时，控制阀芯分别做匀速运动、匀加速运动以及阀芯受到液体阻力与电磁力作用力的耦合力的运动，分析了三种工况下电磁阀内部流场质量流率和阀门出口入口压降的变化以及运动时间，从而得到该电磁阀的动态特性。

Other transmission products 18, Tsubakimoto JAPAN: transmission chain, cable protective cover, slow motor, coupling, Tensioner kits, torque limiter, overrunning clutch, electric putt, buffers; 19, JAPAN Concord produced by: AC electric drum, DC roller; 20, Japan Concord Industry: universal coupling; 21,: The United States aerogenes fetal-type brake clutch, water-cooled oil-cooling brake clutch; 22, Asahi Seiko: pneumatic brakes, pneumatic clutches, fluid couplings, bearings with Block 23, shinko JAPAN: electromagnetic clutches, electromagnetic brakes, vibration equipment; 24, kokura JAPAN : electromagnetic clutches, electromagnetic brakes; 25, Japan Muto motor: a variety of fans, dust collection machines; 26, Showa Japan: Precision rotary joint, steam joints, hydraulic, coolant dedicated joint; 27, Seiko Kobayashi JAPAN: Block Bearing Belt; 28, Taiwan·×: indexing device; 29, Seiko Epson: Precision multi-joint manipulator.

其它传动系列产品18、日本椿本：传动链条，电缆保护套，减速电机，联轴器，涨紧套，扭力限制器，超越离合器，电动推杆，缓冲器；19、日本协和制作所：AC电动滚筒，DC电动滚筒；20、日本协和工业：万向联轴节；21、：美国产气胎式刹车离合器，水冷油冷式刹车离合器； 22、日本旭精工：气动刹车，气动离合器，液力偶合器，带座轴承23、日本神钢：电磁离合器，电磁刹车，振动设备；24、日本小仓：电磁离合器，电磁刹车；25、日本武藤电机：各种风机，集尘机；26、日本昭和：精密旋转接头、蒸汽接头、液压、冷却剂专用接头；27、日本小林精工：带座轴承；28、台湾谭子：分度装置；29、爱普生精工：多关节精密机械手。

Recently,the control of power supply of high frequency switch has been developed towards the "high refined and cuspidate" direction.Although the parts of apparatus have small volume and refined precision,the Electro Magnetic Interference and radiation are much stronger than before.

现在的高频开关电源控制已向&高、精、尖&方向发展，这些器件体积小、精度高，但电源内部的电磁干扰、辐射比原来更强了，为了使高频开关电源在预期的电磁环境下能正常工作、无性能降低及故障，并对电磁环境中的任何事物不构成电磁干扰，必需对其进行电磁兼容。

The extrinsically electromagnetic loss of 3-dimentional structures was proved by the comparative measurement of parameters between 3DRCs and their same composition disks and exhibited high-temperature and wide frequency characteristics, which was found closely related to their nature materials. The extrinsically loss was higher in magnetic 3DRCs than that of nonmagnetic ones.

通过与同质陶瓷压片的电磁参数对比，证实了三维连通网络结构存在非本征电磁损耗，且这种非本征电磁损耗具有耐高温和宽频带特性，损耗的大小与网络骨架的材质有关，磁性网络陶瓷的非本征电磁损耗比非磁性的大。

Heating pipe valve explosion Citation Heating pipe valve explosion Citation Tianjin Pharmaceutical Co., Ltd. Qing Hua Hengsen pipe radiator valve damage caused explosion, security guards, members of the book rather selfless and courageous burst into the scene, so that three stranded women workers were rescued by the unit leadership this award.

Heating pipe valve explosion Citation ；是由上海天阀实业有限公司提供的阀门新闻，中文译文仅供参考上海天阀实业有限公司还生产电动执行器电磁阀电站阀门眼镜阀疏水阀及不锈钢法兰电磁阀，两口两位直动式电磁阀，锻钢加长端闸，ZCF塑料王电磁阀，ZQDF-A通用电磁阀，欢迎您的选购。

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。