查询词典 impedance

The Wheatstone bridge is most sensitive to small fractional impedance changes in one of its arms when all the arms are the same impedance.

惠斯通电桥在四个桥臂阻抗相同时而其中的一条桥臂发生哪怕是极小的变化都非常敏感。

Starting with the traits of zero order impedance and the relationship between zero order current and zero order impedance,analyzes the main differences of electric traits of power cable s and aerial lines and the disadvantages of applying power cable s into the traditional grounded protection.

从正、负、零序阻抗特性以及零序阻抗与零序电流的关系入手，分析了架空线路与电力电缆电气特性的主要区别及传统接地保护应用于电力电缆线路所带来的弊端。

Starting with the traits of zero order impedance and the relationship between zero order current and zero order impedance,analyzes the main differences of electric traits of power cables and aerial lines and the disadvantages of applying power cables into the traditional grounded protection.

从正、负、零序阻抗特性以及零序阻抗与零序电流的关系入手，分析了架空线路与电力电缆电气特性的主要区别及传统接地保护应用于电力电缆线路所带来的弊端。

Meanwhile, the coated surface was hydrophobic with a contact angle of 107.2°since the introduction of methyl groups and methylene groups. Static immersing corrosion test, potentiodynamically polarization curve and electrochemical impedance spectroscopy were conducted to evaluate the film corrosion performances. The results of potentiodynamically polarization curve and EIS in 55wt% LiBr solutions at room temperature in atmospherical pressure indicated that the corrosion current density of BMBSE film coated surface was 4 orders of magnitude smaller than that of bare SUS304 steel, and the impedance was increased by a factor of 10000. Static immersing corrosion test presented that the BMBSE film can significantly increase the corrosion resistance in 55wt%LiBr solution at 180°C compared with stainless steels.

同时由于有机组分甲基和亚甲基的引入，结构均匀致密，并具有一定的疏水性；电化学测试结果表明BMBSE膜的极化阻抗比不锈钢大4个数量级，自腐蚀电流密度也下降低了4个数量级左右，具有良好的耐腐蚀性能；成膜的影响因素优化结果表明BMBSE、EtOH、D.I.water摩尔比为1∶4∶3，热处理温度为200℃时，更有利于制备结构均匀、致密、耐腐蚀性能好的薄膜；静态浸泡腐蚀实验结果说明，在180℃、55%的高温溴化锂溶液中BMBSE膜能起到良好的腐蚀防护作用。

All these characteristics can extend frequency band , reduce antennaelectric size and improve impedance characteristics. In order to miniaturization ofantenna, impedance complete compensate and matching optimization of electricallysmall antenna are brought forward, and this method is applied to the discage antennas.

从阻抗特性和辐射特性的实测数据表明，水加载单极振子天线的谐振频率能很好地向低端下移，局部水加载单极圆锥天线在保持原有宽频带特性的前提下，以较少的效率损失实现了较大范围向低频区扩展，即天线小型化，这将为短波超短波波段天线进一步的小型化设计提供很好的思路。

The mice were then challenged with inhaled methacholine and respiratory system impedance tracked for the following 10 minutes. Respiratory elastance was estimated from each impedance measurement.

小鼠再通过吸入乙酰甲胆碱激发，并记录随后10分钟的呼吸系统阻力，采用每一侧阻抗测量评估呼吸弹性。

AC impedance for anode result shows that the SEI film is incrassated and compacted,and the impedance is increased from 183.1 to 310Ω.

储存后电解液中LiPF_6发生了一定程度的分解，溶剂被氧化生成小分子物质。

Electrochemical behaviors on the surface of jamesonite in an acidic solution of pH4.0 buffer solution containing diethyl dithiocarbamate were investigated by the methods of cyclic voltammetry and AC impedance.The changes of the reactions,electrochemical adsorption,passivation action,electrochemical impedance and interfacial capacitance on jamesonite were discussed under the different conditions of electrode potentials.

用循环伏安和交流阻抗法，研究了脆硫锑铅矿在含乙硫氮的pH 4.0缓冲溶液中的表面电化学行为，讨论了在不同电位下脆硫锑铅矿表面的反应、电化学吸附、钝化作用、电化学阻抗、微分电容的变化。

Compared to acoustic impedance, elastic impedance contains more lithologic and physical information of the reservoir.

相对于声波阻抗，弹性阻抗包含有更多的储层岩性和物性信息。

Analyzing basic characteristics of aluminium electrolytic capacitors we have discussed performances of high-frequency low-impedance poleless aluminium capacitors, have developed new operating electrolyte s and selecting appropriate materials we have made high-frequency low-impedance poleless aluminium electrolytic capacitors with maximum temperature 85℃ and lifetime 3000h.

从铝电解电容器的基本性能分析入手，对高频低阻抗无极性铝电解电容器的特性进行了分析和讨论，开发出新型的工作电解液，并选择合适的材料，研制出了可用于85℃，3000h的高频低阻抗无极性铝电解电容器。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了