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Top Click: Beijing prosperous band \ power with tropical \ power tracing \ with tropical \ Electric Heating Band \ plus tropical \ Beijing band \ prosperous band \ constant power band \ Self-Regulating band \ explosion-proof band \ since limit temperature band \ silicone rubber band \ glass fiber band \ ceramic crawler band \ tank insulation band \ electricity with thermal insulation band \ Chemical pipeline explosion-proof band \ pipeline special explosion-proof band \Natural gas pipeline explosion-proof band \ special explosion-proof band \ offshore oil platform explosion dedicated band \ marine explosion-proof band \ silicone rubber band drums \ to heating a dedicated band \ Fire pipeline explosion dedicated band \ Instrumentation Pipeline explosion-proof band \ Power Plant special explosion-proof band \ steel plant-specific anti-band \ chemical special explosion-proof band \ solar water pipes dedicated band \ cement pipe dedicated band \Pipe insulation dedicated band \ constant power electric tracing band \ Self-Regulating Electric with tropical \ Distribution HA-specific anti-desiccant band \ substation explosion-proof band dedicated dehumidification \ high-pressure explosion-proof cable dedicated band of snow and ice \ Pharmaceuticals explosion-proof plant cooling tower dedicated band \ mine water pipeline explosion-proof band dedicated \ Oil and Gas Transport Special Vehicle explosion-proof band \ super-long and other type of special explosion-proof band.
热门点击：北京富强电热带 \电伴热带\ 电伴热\ 伴热带\ 电加热带\ 加热带\ 北京电热带 \富强电热带\ 恒功率电热带\ 自控温电热带 \防爆电热带 \自限温电热带 \硅橡胶电热带 \玻璃纤维电热带 \陶瓷履带式电热带\ 水箱保温电热带 \电伴热保温电热带 \化工管道防爆电热带 \输油管道专用防爆电热带\ 天然气管道防爆电热带\ 特种防爆电热带\ 海洋石油平台专用防爆电热带\ 船用防爆电热带\ 硅橡胶油桶电热带 \地采暖专用电热带 \消防管道专用防爆电热带 \仪表管线防爆电热带 \热电厂专用防爆电热带 \钢铁厂专用防爆电热带 \化工厂专用防爆电热带 \太阳能水管专用电热带 \水泥厂管道专用电热带\ 管道保温专用电热带\ 恒功率电伴热带 \自控温电伴热带\ 配电房除湿专用防爆电热带 \变电站除湿专用防爆电热带\ 高压电缆化冰雪专用防爆电热带 \制药厂冷却塔专用防爆电热带 \煤矿水管道专用防爆电热带\ 油气运输专用车防爆电热带\ 超长型特种防爆电热带等。
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The influence of the structure and material parameters on static and dynamic characteristics is studied. The three dimensional static analysis is obtained by the power series expansion method for a piezoelectric composite laminates. Three dimensional distribution of bonding stress, displacement and electric potential are presented. The distributions of electric potential across thickness of two kinds piezoelectric materials are discussed.
对于静态问题，采用三维精确解方法，给出了压电层与基体之间剪应力、位移、电势的三维分布图；讨论了工程中常用的两类压电材料在感知和作动情况下沿压电材料厚度方向电势的分布情况，分析了电势可看作线性分布的条件；讨论了压电层和粘结层的厚度及材料特性变化对压电感知和作动效果的影响，并对压电层的厚度作了优化分析。
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In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.
本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。
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The invention relates to a processing method of preventing frostbite and restarting of hydrogen electric pile, whose characteristic lies in the treating processes includes: When the electric pile turns off, the unsaturated fuel gas or the nitrogen, through the circle boast to clean the dissociate water; drying the MEA film module to keep the water content below the stipulated temperature which does not ice up; then the recycle gas through a wet exchanger to dry and the dried gas is continue used in the dry pile step; when restarting the electric pile, the recycle gas must heats then through the pile to elevate the temperature, then heats the fuel gas and the oxidant of the gas source, through the weting of the wet exchanger enters to the calefactive pile, enhances the wet step of the film module in the pile, starts the power output of the pile.
本发明涉及一种氢电堆的防冻和重新启动时的处理方法，其特征在于处理过程包括：电堆停机时，将水蒸气不饱和的燃料气体或氮气，通过循环吹扫除去电堆的游离水；干燥其中的MEA膜组件，使膜组件含水量降低到规定低温下不结冰的程度；而后再令循环气体通过一个湿交换机将循环气体干燥，以及被干燥后的循环气体继续用来干燥电堆的步骤；在电堆重新启动时，须将循环气体加热后通过电堆，使电堆升温，然后再将气源的燃料气及氧化剂加热，通过湿交换机加湿后进入已升温的电堆，提高电堆中膜组件的湿度的步骤，开始电堆的功率输出。
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The results are as follows.(1) Long train electrical stimulation at the dMNF facilitated myoelectric activities of genioglossus and phrenic muscle.(2) Short train electrical stimulation of dMNF, when delivered in the inspiratory phase, caused prolongation of myoelectric activities of genioglossus and phrenic muscle; but when delivered in the expiratory phase, myoelectric activities of genioglossus and phrenic muscle were shortened.(3) Long train electrical stimulation at the vMNF inhibited myoelectric activities of genioglossus and phrenic muscle.(4) Short train electrical stimulation of vMNF caused shortening of myoelectric activities of genioglossus and phrenic muscle, when delivered in the inspiratory phase, but a prolongation when delivered in the expiratory phase.(5) The effects of microinjection of glutamate to dMNF and vMNF were similar to those of electrical stimulation.
结果如下：(1)长串电脉冲刺激dMNF引起颏舌肌和膈肌肌电活动明显增强；(2)短串电脉冲刺激dMNF，当刺激落位于吸气相时，引起颏舌肌和膈肌在吸气相的肌电活动延长，当刺激落位于呼气相时，引起颏舌肌和膈肌在呼气相的肌电活动提前终止；(3)长串电脉冲刺激vMNF使颏舌肌和膈肌肌电活动明显被抑制；(4)短串电脉冲刺激vMNF，当刺激落位于吸气相时，引起颏舌肌和膈肌在吸气相的肌电活动提前终止，当刺激落位于呼气相时，引起颏舌肌和膈肌在呼气相的肌电活动延长；(5)在dMNF和vMNF分别微量注射谷氨酸钠，其效应与电刺激结果基本一致。
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The main producing all kinds of heaters, electric heaters, electric equipment, electric heating devices, ALUMINIUM Copper heater, pipeline, electrical heating pipe, buried in ceramic tile, heating, ceramic electric heater, electric heating Mica stainless steel ring, SiC far-infrared heating panels, vacuum cleaning stoves, TEG cleaning furnace, aluminium oxide fluidized bed, conducting oil furnace, Organic Heat Carrier stoves, electric oven, preheat furnace components, air circulation box - Hot stove, oven insulation, Dianre Dai, finish the deployment of chutes, such as tanks.
主要生产各种加热器、电加热器、电热设备、电加热装置、铸铝铸铜加热器、流水线、电加热管、埋入式陶瓷电加热瓦、陶瓷电加热器、不锈钢云母电加热圈、碳化硅远红外电加热板、真空清洗炉、三甘醇清洗炉、三氧化二铝流化床、导热油炉、有机热载体炉、电加热炉、组件预热炉、热风循环箱式预热炉、保温烘箱、电热带、油剂调配槽、储罐等。
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Including the site eMule,电驴 to introduce information about the text, links and software to download screenshots.
包括本站 eMule，电驴介绍资料，说明文字，下载链接和软件截图。
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Including the site eMule VeryCD,电驴 to introduce information about the text, links and software to download screenshots.
包括本站 eMule VeryCD，电驴介绍资料，说明文字，下载链接和软件截图。
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Mainly producing all kinds of electric heaters, electric equipment, electric heating devices, bronze cast aluminum heaters, electric heating tubes, submerged electric heating ceramic tile, ceramic electric heater, stainless steel electric heating coil mica, silicon carbide Yuanhong foreign heating panels, aluminum alloy Zhuang Salisbury High Voltage Switchboard DJR electric heating plate, electric oven, preheat oven components, hot air circulation box-type preheating furnace, oven insulation, band, agent deployment chutes, tanks and so on.
主要生产各种、电加热器、电热设备、电加热装置、铸铝铸铜加热器、电加热管、埋入式陶瓷电加热瓦、陶瓷电加热器、不锈钢云母电加热圈、碳化硅远红外电加热板、高壓開關柜DJR梳壯鋁合金電加熱板、电加热炉、组件预热炉、热风循环箱式预热炉、保温烘箱、电热带、油剂调配槽、储罐等。
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The existence ofpolar nanoregions dramatically influences the extrinsic dielectric nonlinearityof paraelectric phase. 5 Slow relaxations of field induced piezoelectricresonance of paraelectric barium stannate titanate were observed after eitherapplying or removing a DC bias field. This phenomenon is attributed to slowspace charge dipoles formed by injected homocharges and validated by theobservation of a negative piezoelectric constant. Isothermal study ondielectric constant and discharging current after application or removal of astep field were performed. The relaxation laws in ferroelectric andparaelectric phases are different. The transportation of homocharges arebelieved to be responsible for the strong relaxation behavior in paraelectricphase. Domain wall can trap space charges thus the relaxation in ferroelectricphase is relatively weak. Abnormal phenomena, such as slim-waisted hysteresisloops, abnormal C-V curves and clockwise reversible hysteresis loops observedin barium stannate titanate ceramics, were attributed to pinning of gatheredpoint defect on domain walls.
5研究了直流电场施加和撤除引起的钛锡酸钡顺电相场诱压电谐振慢弛豫现象，认为这是同极性空间电荷注入形成空间电荷慢偶极子导致的，观察到的负压电常数证实了这个观点；研究了等温条件下阶跃电压作用下介电常数和放电电流的慢弛豫现象，发现钛锡酸钡陶瓷的铁电相和顺电相呈现不同的宏观性能时间依赖规律，认为是同极性空间电荷的输运过程导致了顺电相样品呈现强的弛豫行为，铁电相中存在畴壁捕获空间电荷的机制因而其弛豫行为较弱；研究了钛锡酸钡陶瓷中束腰电滞回线、反常 C-V 曲线和顺时针可逆电滞回线等反常现象，将其归因于点缺陷的聚集对铁电畴畴壁的钉扎作用，多次电场循环有助于解除这种钉扎状态，减弱反常特征。
- 更多网络解释与电相关的网络解释 [注：此内容来源于网络，仅供参考]
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brush chattering：电刷振动,电刷震颤
brush changing 电刷更换 | brush chattering 电刷振动,电刷震颤 | brush clamp 电刷夹,电刷接线端
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corposant：桅杆上端电火桅上电火桅上电火
corporeal 有形的;具体的;物质的 | corposant 桅杆上端电火桅上电火桅上电火 | corposant 桅上电火
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electrocoagulation：电凝法
1.电凝法(electrocoagulation):以往采用辐射线状(radialfashion)电烙法(electrocauterization)愈合时间较久(6~8周)目前多改用电凝法将整个糜烂熨平故又称电熨(electricironing)根据山东医科大学附院2095例的总结电熨疗法治疗宫颈糜烂1次有效率为100%详细操纵先安顿好电熨器常规消毒外阴阴道及宫颈用阴道窥器暴露好宫颈将电熨
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galvanic electricity：伽伐尼电,流电,化电
galvanic ecrasevr 电烙绞勒器 | galvanic electricity 伽伐尼电,流电,化电 | galvanic element 原电池
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hermetic motor：弥缝式电念头; 弥缝式电念头; 弥缝型电念头
Hele-Shaw motor 径向活塞式液压电念头; 径向活塞式液压电念头 | hermetic motor 弥缝式电念头; 弥缝式电念头; 弥缝型电念头 | hermetically sealed motor 弥缝式电念头
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electric inductivity：电感应性,介电常数
电通量 electric flux | 电感应性,介电常数 electric inductivity | 电测,电性测录 electric log
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electropercussive welding：电冲击焊, 电接触焊, 电点焊
electrons leaves welding电子束焊接 | electropercussive welding电冲击焊, 电接触焊, 电点焊 | electroslag welding电渣焊
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Induction Electrolog：感应-电测井;感应-电测曲线;感应-电测仪
induction electrical survey 感应电测井 | Induction Electrolog 感应-电测井;感应-电测曲线;感应-电测仪 | induction field 感应场
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metal-clad motor：金属加固电念头; 铠装电念头
mercury motor type 金属汞电念头式 | metal-clad motor 金属加固电念头; 铠装电念头 | midget motor 微型电念头; 小规模电念头
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spark potential：电花电位;电花[电]势
火星塞 spark plug | 电花电位;电花[电]势 spark potential | 电花淬熄 spark quenching