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Influence of the magnetic field on the microstructure of AZ91 magnesium alloy;2. The results show that the current density, magnetic field intensity and electromagnetic force in melts are distributed nonuniformly to a great extent.

应用数值方法对直流电弧炉条件下的 Maxwell 方程进行了解析,结果表明,熔体中的电流密度、电磁场强度和电磁力的分布是非常不均匀的,电弧附近的钢水中的电流密度较其它区域高出 1~2 个数量级,电磁力较其它区域高出 2~3 个数量级,该区域的电磁力对熔体搅拌起着决定性的作用,预测了钢水的流形。

According to the obvious changes of the transmittance of ER fluidsunder an applied electric field, an assumption on the application ofER fluids to smart window s is presented inthis paper.

由于电流变液在外加电场下具有透射率的明显变化,文中提出了电流变液应用于灵巧窗的设想。

Zn-La alloys increase the overpotential ofhydrogen evolution, Tafel slope 〓 and polarization, decrease the corrosion current density, inhibitthe corrosion of zinc electrode in alkaline solution, decrease anode Tafel slope 〓, promotedischarge reaction of zinc electrode, have higher passivation current density, inhibit thepassivation of zinc electrode, avoid the oversaturation of zincate in electrolyte, greatly increase〓 diffusion coefficient, decrease Tafel slope 〓, polarization and the overpotential of deposition,inhibit the dendrites formation and improve the electrodepostion of Zn.

实验结果表明,Zn-La合金电极显著改善了锌电极的各项电化学性能:提高析氢过电位、析氢过程Tafel斜率〓和极化,减小腐蚀电流密度,抑制锌电极在碱液中的腐蚀;降低阳极Tafel斜率〓,促进了锌电极的放电反应;具有较高的维钝电流密度,抑制锌电极的钝化;有效避免了溶液中锌酸盐的过饱和现象:使〓的扩散系数明显增大:降低Zn沉积过程的Tafel斜率〓、极化和沉积过电位,明显抑制锌枝晶的生长,改善了锌的电沉积性能。

ATP activated current was potentiated markedly by preapplication of BK.The enhancement of BK was depndent on the concentration of BK and ATP.

预加BK30S后再加ATP,则ATP激活电流明显增强,其电流幅值的增强作用依赖于BK及ATP浓度。

Combination with the practice of domestic aluminium production industry, the 3—D current distribution, magnetic flux density, electro—magnetic force, melt flow velocity field of three diffrent cells, that is, 80KA Soderberg cell with vertical stub, 155KA prebake cell, 160KA prebake cell were computed and the related computer—simulated pictures were drawn by use of the softwares we made.

本文利用电流分布、磁场、电磁力场和流场的计算软件,结合我国生产实际计算了80KA上插自焙槽,155KA预焙槽,160KA预焙槽三种不同槽子的三维电流分布,槽内磁感应强度,熔体中电磁力场,熔体流速场,绘制了相应的计算机仿真图,为了增加计算软件的可靠性、用铁棒法测定了80KA上插自焙槽,155KA预焙槽的铝液流速,测定值与计算值符合较好。

A new predischarge trigger generator, that is more simple and stable than the former one, has been designed and fabricated using the car ignition loop DQ128. A Rogowski coil, that instead of the former device can much more accurately measures the current flowing through capillary, has been made and calibrated.

自制了罗可夫斯基线圈,并对其进行了标定,代替原先使用的回流器测量放电电流,解决了无法准确测量流过毛细管电流的问题,为实验分析提供了更准确的依据。

On the other hand, an increase in rate of prepotential depolarization. And fAHP were observed. Similar increases were apparent during temperature raising. 3. Potassium currents were essential elements for the generation of AP.

三。钾电流主要参与动作电位的复极化过程。0.2mM的4-AP可以使P1全细胞延迟整流性钾电流减少51.5%,P18减少72.4%,表现在兴奋型上使P1和P18神经元动作电位1/2幅度间期延长,分别延长24%和33%。

The special tribo-electdc tester with high sliding speed and electric current was developed,which mail working parameters are, current density up to 2.5 A/mm~2, the sliding speed 100 m/s,the load over 500 N (3.2 MPa) and the pulsant strike pressure within 20 N. This testersuccessfully simulates the tribological and electric properties of strip materials. 2, By using the above tester, study on tdbological properties and carrying currentperformances of copper-base powder metallurgy material and metal impregnation carbonmaterial are carded out.

本论文开展的主要研究内容和所取得的成果如下: 1、首次开发了大电流、高速度和重载荷的载流摩擦磨损专用试验机,能够稳定提供恒定交流电流密度2.5 A/mm~2,相对滑动速度100 m/s(12000 r/min),载荷可达500 N(3.2MPa),脉动冲击载荷可达20 N,为研究提速接触网和滑板的高速载流摩擦学特性及其机理,以及开发新型高耐磨性、高载流性能滑板材料提供了先进可靠的试验手段(该机已获得一项实用新型专利,ZL 2006 2 0096036.5)。

For electric power pulsive shipping, the voltage is not always normal, especially when the main motor is starting, and three-phase bridge commutated circuit is used widely, so, a new method to compute harmonic is developed, which is more accurate and practical, is more adapt to the ship condictions.

因此,本文在上述文献的基础上,对接入电压波形畸变的电网中的三相桥式整流电路进行了分析,采用了一种实用的新方法来计算三相桥式整流器所产生的谐波电流。本方法考虑了交流侧电抗及电网中存在的谐波电压,导出了交直流两侧谐波电流的计算公式。

The square wave or corrected sine wave auto inverters have many limitations. When supplying to inductive load (such as electric fan, electric drill etc.), a square wave or corrected sine wave auto inverter produces too much harmonic current which makes the load seriously heated and even damaged. When supplying to capacitive load or rectificative load such as notebook PC, mobile phone charger etc.

方波或修正正弦波电源有很多局限性:在为感性负载供电时产生大量谐波电流,导致电器严重发热,甚至损坏;为容性或整流性负载(笔记本电脑、手机充电器等)供电时产生严重的脉冲电流,严重时可能导致电器损坏。

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They go to town. Would you just ask them?

他们在城里你能问他们吗?

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量,然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。

Add in realistic voice acting, and you're about to get emotionally attached toa whole platoon of charactersEvery object on the battlefield is destructible - and once it's destroyed, it stays destroyedIn addition to the rich 1-player storyline, Pathway to Glory features the kind of multiplayer options that N-Gage was made for: go against another player using the same game deck with the Hot Seat option, or connect via Bluetooth technology and go head-to-head.

在现实的声音演戏方面增加,而且你正要拿个性的整个排给在情绪上附上的 toa在战场上的每个物体是可破坏的-而且一经资讯科技被破坏,它停留破坏发现你站着哪里:钮扣的推给你一个概览,如此你能很快地恢复一种不稳定的情形控制除了富有的 1个运动员的剧情之外,通往光荣的道路以可多人玩的选项类型为特色 N-规格被有益:去对抗和困境选项一起使用相同的游戏甲板的另外一个运动员,否则经由 Bluetooth 技术连接而且去头-到-头。