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dielectric property     
相关语句
  介电性能
     Comparison of Dielectric Property between BaTiO_3 and CaCu_3Ti_4O_(12)
     BaTiO_3与CaCu_3Ti_4O_(12)的介电性能比较
短句来源
     The dielectric property of Dy-doped Sr_2Bi_4Ti_5O_(18)ceramics
     Dy掺杂Sr_2Bi_4Ti_5O_(18)陶瓷的介电性能
短句来源
     Preparation of Nanosized Ag_(0.9)Na_(0.1) (Nb_(0.6)Ta_(0.4))O_3 Ceramic Powder and Inuestigation on Its Dielectric Property
     Ag_(0.9)Na_(0.1)(Nb_(0.6)Ta_(0.4))O_3纳米陶瓷粉体的制备与介电性能研究
短句来源
     Synthesis, Structure and Dielectric Property of Ba_(1-1.5x)Bi_xTiO_3
     纳米Ba_(1-1.5x)Bi_xTiO_3的合成、结构及介电性能
     Microwave synthesis, structure and dielectric property of nanopowder Ba_(1-x)Ca_xTi_(1-y)Zr_yO_3
     纳米Ba_(1-x)Ca_xTi_(1-y)Zr_yO_3的制备、结构与介电性能
短句来源
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  介电特性
     Synthesis, Structure and Dielectric Property of Ba_(1-x)Sr_xTi_(1-y)M_yO_3
     Ba_(1-x)Sr_xTi_(1-y)M_yO_3固溶体的湿化学法合成与介电特性
短句来源
     Dielectric Property Testing, Numerical Simulation and Practical Application of Detecting Using Ground Penetrating Radar in Shield Tunnel
     盾构隧道探地雷达探测的介电特性试验、数值模拟及应用
短句来源
     The saturated polarization intensity,the residual polarization intensity and the coercive electric field of the PST samples can attain about 19 μC/cm 2 ,6 6 μ C/cm 2 and 16 kV/cm,respectively. The pyroelectric coefficient was in an order of 10 -4 C/m 2·K. The dielectric property of the PST thin films depended on the frequency measured.
     其介电特性与测试频率有关 ,试样的饱和极化强度可达 19μC cm2 ,剩余极化强度可达 6 6 μC cm2 ,矫顽场强达 16kV cm ,热释电系数达10 - 4 C m2 ·K量级 ,表明所制备的PST薄膜具有良好的铁电性。
短句来源
     The paper introduces the preparation of CaF2 -doped ZnNb2O6 microwave Dielectric Ceramics by traditional ceramics route. The systematic study of the microstructures of ZnNb2O6 Ceramics doped with CaF2 by XRD, SEM and EDS shows that Ca2+ has replaced Zn2+ in crystal structure to form CaNb2O6, the glass phases being not observed at grain-boundary junctions. ZnNb2O6 ceramics doped with CaF2 show a better microwave dielectric property.
     用传统固相法合成了CaF2掺杂ZnNb2O6微波介质陶瓷,通过XRD、SEM、EDS等对其微结构进行了系统的研究,结果显示,Ca2+已经固溶到晶格中取代Zn2+形成CaNb2O6没有发现晶界玻璃相,0.5%CaF2掺杂可使ZnNb2O6陶瓷的烧结温度从 1150℃降到1080℃,并且具有较好的微波介电特性
短句来源
     MICROWAVE DIELECTRIC PROPERTY OF SOLID BITUMEN
     固体沥青的微波介电特性研究
短句来源
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  介电性质
     Structure and dielectric property of SiO_x/a - C: F/SiO_x multiple - layer films prepared by ECR- CVD
     ECR-CVD制备的SiO_x/a-C:F/SiO_x多层膜的结构与介电性质
短句来源
     Crystal Growth of LaAlO_3 by Verneuil Method and the Dielectric Property of LaAlO_3 Crystal
     焰熔法生长LaAlO_3晶体及其介电性质
短句来源
     We also studied the effects of the dielectric property of the sample in the whole range in which the ST-ESR spectra are sensitive to τC.
     作者还研究了在ST-ESR谱对~(τ)C的整个敏感范围内样品介电性质的作用。
短句来源
     Firstly, on the basis of researching upon the coaly facies and dielectric property of raw coal the measurement of dielectric constant was made and calculating methods of powder material were amended.
     首先从原料煤的煤岩组成及介电性质研究入手 ,对粉状物料介电常数的测量方法和计算公式进行了深入研究及理论修正 ,在此基础上选定原料煤 ,并进行了电选机操作参数及入料性质等多因素的试验研究 .
短句来源
     First principles calculations on the structural, vibrational and dielectric properties for β-Si_3N_4 and BN, using pseudopotential plane wave method, have been conducted. This will be conducive to not only the establishment of the quantitive relationship between microstructure and dielectric property of the materials , but also offering the guide line for the design of the new transmissive materials with low dielectric constant among the materials system of Si-B-O-N.
     本文利用第一性原理赝势平面波方法计算了β-Si_3N_4和BN的结构性质、振动性质以及介电性质,建立了材料微观结构与介电性质之间的定量关系,可为新型Si-B-O-N低介电常数透波材料的设计提供依据。
短句来源
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  介电性
     The results of ferroelectricity and dielectric property measurement show that the ferroelectricity and dielectric property are enhanced by La doping. Next,the remnant polarization is increased from 0.15×10–6 C/cm2 to 0.2×10–6 C/cm2 .
     铁电性的测试表明,通过La掺杂,使薄膜的介电性和铁电性得到了增强,剩余极化强度由0.15×10–6C/cm2增加到0.2×10–6C/cm2。
短句来源
     THE DIELECTRIC PROPERTY AND DEFECTS OF La-DOPED BaTiO_3 CERAMICS
     La掺杂BaTiO_3陶瓷的介电性与缺陷
短句来源
     The Dielectric Property and Positron Annihilation in Doped SrTiO_3 Ceramics
     掺杂SrTiO_3陶瓷的介电性及正电子湮没
短句来源
     The Variation of the Dielectric Property of La-Doped BaTiO3 Ceramics with Dopant Content and Frequency
     La掺杂BaTiO_3陶瓷的介电性随掺La量及频率的变化
短句来源
     The effect of doping on the dielectric property of La-doped SrTiO3 ceramics is studied by the positron lifetime technique.
     本文应用正电子湮没寿命谱方法研究掺杂SrTiO_3陶瓷的介电性.
短句来源
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  dielectric property
The leakage behavior and dielectric property of BST80/MgO heterostructured thin films deposited on LaNiO3 (LNO)/Si substrates by sol-gel were investigated.
      
The inorganic-organic hybrids have an interesting dielectric property; their dielectric constant is higher than that of ethyl cellulose and that of a simple mixture of TiO2 and ethyl cellulose.
      
Preparation and dielectric property of sintered monoclinic hydroxyapatite
      
Influence of Al2O3 buffer layer on the crystalline structure and dielectric property of PbTiO3 thin film by sol-gel processing
      
It has been further revealed that the dielectric property is mainly governed by a highly resistive surface layer.
      
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As an electric property of rocks, dielectric constant has been used in recent years as a new parameter in well logging. Essentially different from resistivity, dielectric constant is a measure of polarizability of rocks and its effect on the electric field is manifest only at the frequency of over dpzens of mega-hertz. For this reason, high frequency is used in studying the dielectric constant. With the help of condenser and high-frequency electromagnetic wave, the relationship between the dielectric constant...

As an electric property of rocks, dielectric constant has been used in recent years as a new parameter in well logging. Essentially different from resistivity, dielectric constant is a measure of polarizability of rocks and its effect on the electric field is manifest only at the frequency of over dpzens of mega-hertz. For this reason, high frequency is used in studying the dielectric constant. With the help of condenser and high-frequency electromagnetic wave, the relationship between the dielectric constant of rocks on the one hand and mineral content and distribution, water content, salinity, temperature and mud content of rocks on the other in a 60 megacycle field is determined, together with the character of frequency dispersion of the dielectric constant of rocks, oil and water etc. in a field with frequency ranging from 5 kilocycle to 250 megacycle. With the relationship thus ascertained, the dielectric property of rocks in a high-frequency field is known, thus providing a reliable theoretical basis for interpretation of phase dielectric logs, designing of instruments and evaluation of high-frequency electromagnetic logging.

本文通过对高频场中岩石介电常数和各种影响因素关系的实验研究,基本搞清了岩石介电常数与各种影响因素的关系,对高频场中岩石的介电特性有了一定认识。从而为相位介电测井资料解释、仪器设计以及高频电磁波测井新方法的研究提供了理论依据。

The chemical and electrochemical properties of yttrium compounds in steel were investigated. Some effects which may influence the quantitative extraction of yttrium compounds, e.g. potential and current density of electrolysis, acidity and dielectric property of electrolyte, were considered. The experimental results showed that the acidic and dielectric effects on the extr-action rate are important. Whereby a new electrolyte containing 1% ascorbicacid and 0.5% tetramethyl ammonium chloride in methanol...

The chemical and electrochemical properties of yttrium compounds in steel were investigated. Some effects which may influence the quantitative extraction of yttrium compounds, e.g. potential and current density of electrolysis, acidity and dielectric property of electrolyte, were considered. The experimental results showed that the acidic and dielectric effects on the extr-action rate are important. Whereby a new electrolyte containing 1% ascorbicacid and 0.5% tetramethyl ammonium chloride in methanol was recommended for extracting yttrium sulphide. By using different electrolytes and determining Y and S in extracted residual, the state amounts of yttrium compounds canbe obtained. Combining X-ray diffraction and SEM-EDX observation, the state analysis method of yttrium in steel was established. An unkown yttrium compute und in steel was identified by the proposed method.Its formula is Y2S and has f.c.c structure with lattice parameter a0=5.620A,The state method was utilized to investigate a stainless steel containing yttrium. The experimental results proved that the transformation of MnS to Y5O2S leads to an improvement of pitting resistance.

本文考察了钢中钇化合物的化学、电化学性质,对影响钇化合物定量提取的几种因素:电解电流密度(电位),电解液的极性和酸度等进行了研究,结果说明电解液的极性及酸度对于钇的硫化物定量提取有较大的影响。据此,提出了适宜于钇硫化物定量提取的抗坏血酸—四甲基氯化铵—甲醇电解液和浸蚀溶液。利用电解差减和化合物中钇和硫量的测定进行了钢中不同钇化合物的分别定量。联合X线衍射和SEM-EDX观察等方法建立了钢中钇的状态分析法。 利用状态分析法对钢中未知钇化合物进行了鉴定。结果证明其化学式为Y_2S,立方面心结构,晶格常数α_0=5.620。对含钇不锈钢的状态分析表明,不锈钢抗点蚀能力的改善系由于钇的添加而使钢中MnS转化为Y_2O_2S所致。

The preparation and property indexes of themodified phenolic fibreglass injection plastics FBMZ-7901 are introduced. Various influencing factorsand its heat weightlessness, mechanical strength, thechange of its dielectric property in the heat agingprocess are discussed. The injection instruments,tec-hnological parameters, the injection moulding speci-alities of the phenolic fibreglass and its applicationvalue in production are also described. Experimentaldata show the plastics possesses good characteristicsof...

The preparation and property indexes of themodified phenolic fibreglass injection plastics FBMZ-7901 are introduced. Various influencing factorsand its heat weightlessness, mechanical strength, thechange of its dielectric property in the heat agingprocess are discussed. The injection instruments,tec-hnological parameters, the injection moulding speci-alities of the phenolic fibreglass and its applicationvalue in production are also described. Experimentaldata show the plastics possesses good characteristicsof heat aging at 200 degrees centigrade.

本文介绍了改性酚醛玻璃纤维注射塑料FBMZ-7901的制备技术和性能指标,讨论了催化剂、增韧剂及填料的选定及其对制品性能的影响。对热老化过程中此种塑料的热失重、机械强度、介电性能的变化情况作了介绍,试验数据表明,该塑料具有在200℃下良好的热老化性能。对酚醛玻璃纤维注射设备的特点和注射成型的工艺参数进行了探讨。

 
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