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Based on the effects of atomic radius on the Curie temperature, new bismuth layer-structured piezoelectric ceramics Ca〓〓Bi〓Ti〓O〓 with high Curie temperatures and piezoelectric activities were obtained by A-site substitution for Ca.

本论文从取代原子半径对居里温度的影响入手，利用碱金属原子Li，Na，K和Ce原子复合取代层数m=4的铋层状铁电体CaBi〓Ti〓O〓中位于A位的Ca原子，在保持材料高居里温度的前提下获得了压电系数d〓明显改善的铋层状结构压电陶瓷。

Taking the gradient property of piezoelectric parameters g-(31),elastic compliance parameters S-(33) and density ρ along z direction into account,some parameter identification methods for a functionally gradient piezoelectric material are studied in the present analysis.

当考虑压电材料的压电参数g31，弹性参数S33和材料密度ρ沿厚度呈梯度变化时，通过测量压电材料悬臂梁在电场或横向集中力作用下梁的宏观反映，给出了确定这些参数分布的公式，包括g31、S33的单参数识别及体积力与联合参数识别的方法。

The transient state of torpedo electrical drive system,caused by torpedos steding, shifting, and the fluctuation of battery voltage, and thechange of the resistance in voyage, will influence efltire attitude and stability of thetorpedo immediately, as well as every parts of electrical propulsion system. Therefore,it is necessary to theoretically analyZe the transient state of torpedo electrical powerpropulsion system.

鱼雷电动力推进系统在鱼雷启动、变速及因电池电压的波动和在鱼雷航行阻力变化时而产生的暂态过程都将直接对整个鱼雷的姿态和稳定性产生影响，同时对电动力推进系统本身各个组件也将产生不同影响，因此有必要对鱼雷电动力推进系统的暂态过程进行一些理论分析。

The changes of complex permittivity of pure-water,natrium oxalate,potassium permanganate and sodium chloride aqueous solution with different power were measured.It is shown that the changes of real part of the complex permittivity are all small and the imaginary part of the complex permittivity of electrolyte solution are obvious.

通过实验分别测量了纯水、草酸钠、高锰酸钾和氯化钠水溶液的复介电常数随微波测量功率改变的情况，发现4种待测物质的复介电常数实部都随微波功率改变较小，而草酸钠、高锰酸钾和氯化钠水溶液的复介电常数虚部随微波功率改变明显。

The SBT thin films with STO seeded layer on MFIS structure also appear prefer (115),(006) orientation and good crystallinity. The seeded layer of STO effectively resists the diffusion of Bi into Ir bottom electrode on MIM structure. The remanent polarization and leakage current density of Sr0.8Bi2.6Ta2O9+x thin films with STO seeded layers are significantly improved. In MFIS structure, the Sr0.8Bi2.6Ta2O9+x thin films with STO seeded layer are improved memory window and lead to lower leakage current at low voltage.

在具有STO晶种层基材上沉积之钽酸锶铋铁电薄膜於700℃淬火后，无论在MIM和MFIS结构上皆可得完美(115)方向之SBT结晶相，而STO的种晶层在MIM结构中确实可以有效的阻止铋原子扩散进入底电极，而降低漏电流，在MFIS结构中虽然得到一较小极化值，但由於铁电层所分配到的电场值反而因介电常数值降低而增加，因而得到较大的记忆窗。

Purpose To approach to e fficacy of transcutaneous electrical ner ve stimulation for labor pain of parturient.Methods 120 parturients were randomly divided into TENS,oxytocin and control groups,and labor pain,pain tendency,cervical opening time,effcetive uterine contraction rate and blood cort isol content were compared in the three groups.

为探讨皮电刺激对产妇分娩镇痛的效果，在针刺穴位的应用及皮电刺激机理的研究的基础上，将120例产妇随机分为皮电组、催产素组、空白组3个组，分别对分娩疼痛程度、疼痛进展趋势、宫口张开时间、有效宫缩频率及血中皮质醇含量等多项目进行对比。

ABSTRACT The principle and characteristics of Solid Oxide Fuel Cell were analyzed systematically.

本文系统地分析了固体氧化物燃料电池的原理与特点，研究了SOFC系统中的电催化作用机理，比较了SOFC中的各种阴极电催化剂和阳极电催化剂的。。。

Studying dielectric properties of foods,not only can people understand radio frequency or microwave properties of foods,develop dielectric heating equipment which save most energy,but also can make dielectric properties be applied in evaluating food qualities.

对食品介电特性的研究，不仅能使人们了解食品的射频或微波特性，研发出最具节能效果的介电加热设备，而且介电特性可用于食品品质的识别。

Based on these studies,the technique of preparation process was set and optimized.Lots of 2 kg,20 kg,2500 kg activated carbon were prepared and used in trial to produce DESC with 0.047-1.0 F SEC.Results showed that the activated carbon met the demands.This study offered theoretical basis and feasible technique for domestic production of DESC plate materials.

在此基础上确定和优化了制备技术路线并分批制备了2、20、2500 kg的活性炭，经使用单位试制静电容量0.047-1.0法拉双电层电容器表明，所研制的活性炭满足要求，为双电层电容器的电极板材料国产化提供了理论依据和可行的技术路线。

This year, in the Irtysh River Valley, Huadian Group, Guodian plans to invest 1.8 billion of 200,000 kilowatts of wind power projects are under construction; in perennial Alashankou raging winds, with a total investment of 520 million yuan States CLP Group 1 200,000 kilowatts of wind power project to start in mid-November.

今年，在额尔齐斯河谷，华电集团、国电集团计划投资18亿元的20万千瓦的风电项目正在建设中；在常年狂风肆虐的阿拉山口，总投资5.2亿元的国电集团一期20万千瓦风电工程11月中旬开工。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。