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Especially, since the piezo- and pyroelectricity are reported in mechanically non-uniform space charge electret and hybrid piezoelectric electret structure made of "soft" hand "hard" polymer layer is proposed the piezoelectricity of space charge electret containing porous PTFE have become main study field.

尤其是具有非均匀机械特性的空间电荷驻极体中压电性和热电性的发现，及由两层或多层软硬聚合物构成的复合压电驻极体结构概念的提出，使得多孔微纤维PTFE材料更有了用武之地。

The effects of polymer molecular weight and quenching temperature on the porous structure are also discussed.

讨论了聚合物分子量及淬冷温度对成膜孔结构的影响。

Extraction of quinoline from wash oil by using macro porous strong acid ion exchange resins was discussed.

对大孔型强酸性阳离子交换树脂提取煤焦油洗油中的喹啉进行了初步探讨。

Two finite element analyses were conducted. First, the poroelastic dynamic equations were transformed to Laplace domain and the Galerkin finite element approach is applied to derive the stiffness matrix of rectangular porous element for conducting the finite element frequency domain analysis.

为探讨空间声场之特性，本文将分析方法归纳为二部份，第一部份应用拉普拉斯转换后之多孔线性弹性动态方程以二维矩形多孔弹性元素及 Galerkin有限元素法推导并进行有限元素频域分析。

It is found that the porous medium acting as a heat recuperator can considerably preheat the fuel-air mixture, which promotes the ignition and combustion in the cylinder. And the initial PM temperature is a critical factor controlling the compression ignition of the mixture.

结果表明：多孔介质对混合气具有预热作用可强化发动机的点火燃烧，多孔介质的初始温度是决定压燃点火的决定性因素。

The current density peak of brass welded line appeared at -0.012 V, and a porous corrosion film was formed. The electrode was passivated subsequently. The passivation film was made up of Cu2O, CuCl and ZnO. The passivation film dissolved with electrode potential, and displacement deposition took place between Cu and Zn. The copper redeposition on the electrode surface induced the increase of electrode activity and corrosion rate.

黄铜焊缝在电位-0.012V时出现电流峰，腐蚀产物膜多孔、疏松，随后电极进入钝化区，钝化膜由Cu2O、CuCl和ZnO组成；随电位升高，钝化膜溶解，发生铜锌置换反应，沉积的Cu导致活性电对的形成，增加了合金的腐蚀速度；当电位为+0.87V时，电极表面富集了针状锡和锡的氧化物。

The sand box model is a reduced scale representation of the natural porous medium domain.

砂槽模型是将天然的多孔介质区域按比例缩小的模型。

Also, the kinds of reducing agent played an important role in the formation of porous SnSe nanorods.

通过时间实验，发现棒状的SnSe是由Se纳米管逐渐转变而成的，并讨论了其形成的机理。

With adsorption potential theory and regular solution theory, established the mathematical model of the impact the porous media adsorption has on crude oil bubble point.

借助吸附势理论和正规溶液理论，建立了多孔介质吸附对原油泡点影响的数学模型，并给出了计算结果。

A parametric study is made based on the solutions to illustrate the influence of the minimum quality factor concerning the creep and relaxation behavior of porous medium, the permeability parameter concerning the partial permeable behavior of boundary, and relative rigidity of liner and medium on the frequency response of the cavity.

并进行了算例分析，讨论了反映介质黏弹性性质的最小质量因子，反映孔洞边界半透水性质的渗透性参数及衬砌和介质的相对刚度对问题的影响。分析结果表明：以上参数对圆柱孔洞的频域响应有很大影响。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。