对两种铁电薄膜的厚度、XRD图谱、SEM图像和电滞回线进行了比较和分析。
The thickness, XRD images, SEM pictures and electric hysteresis loops of these two thin films were analyzed and compared.
利用配有电压自动衰减电路的铁电材料测试系统测量了PZT铁电体材料样品的电滞回线。
The PZT ferroelectric slice sample was measured by the system with the automatic voltage-decaying circuit, and hysteresis loops of the sample was exhibited.
采用电滞回线方法和偏置直流电场中叠加小交变电场方法研究了锆钛酸铅反铁电陶瓷材料在强电场作用下的介电行为。
The dielectric behaviour of antiferroelectric lead zirconate titanate has been studied by measuring the polarization and capacitance changes with the electric field.
介绍了测量铁电薄膜开关特性的重要仪器——双极性双脉冲发生器，以及利用双极性双脉冲测试铁电薄膜电滞回线的原理。
The measuring principle and the use of bipolar double pulse generated by measuring instrument for measuring switching characteristics with ferroelectric thin films are discussed.
大时滞过程的自整定pid控制器，采用基于内模控制策略的继电型PID自整定。
The relay feedback self-tuning PID based on internal model control (IMC) was adopted for self-tuning PID controller for long time-delay process.
在相变温度区域里，介电、热电和压电都有明显的热滞效应，具有一级相变特性。
Near the transition temperature, a thermal hysteresis was found in dielectric, pyroelectric and piezoelectric measurements. Thus the transition should be of the first order transition.
该相变的热滞约为70K，与介电及热电测量所得结果基本一致。
The thermal hysteresis of the transition is about 70k, in agreement with that obtained from the dielectric and pyroelectric measurements.
文中用辅助变量法和LILC定阶准则结合来估计电液位置和力偶系统的阶和参数，根据估计参数的渐近正态性确定模型的子阶和时滞。
The instrumental variable method and LILC criterion are used to estimate the order and parameter of electro-hydraulic position and force coupled system.
三轴飞行仿真转台外框要求有相当宽的频带，因此用于外框的电液位置伺服系统的时滞就必须考虑，这对进一步提高系统频带有很大关系。
The time-delay should be considered in designing the system of the outer axis of three-axis with high frequency bandwidth. This is important for improving the bandwidth of system further.
理气导滞汤能使皱胃幽门窦、十二指肠和空肠的峰电活动增强。
The Decoction for Regulating the Flow of Qi and Removing Stagnation could enhance spike potential activities in abomasal pyloric antrum, duodenum and jejunum.
理气导滞汤能使皱胃幽门窦、十二指肠和空肠的峰电活动增强。
The Decoction for Regulating the Flow of Qi and Removing Stagnation could enhance spike potential activities in abomasal pyloric antrum, duodenum and jejunum.
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