The main contents are: 1. Analysis of current communication network to access copper network and the situation analysis transform the existing copper network with fiber optic cable to conduct light into the necessity of copper retreat.

A new kind of miniature conductivity cell was made with a clever and handy method, which has no dead volume and has large area of electrode, high resolution and sensitivity.

使用简便的方法制作了电极面积大、无死体积、分辨率高、检测限低的微型电导池；

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Through analysing the three trouble phenomenon, the base of principle thermal conductivity cell detector 、 thermal conductivity cell temperature controller and micro current amplifier for Gas Chromatography 103 are recommended.

通过三例故障现象的分析，介绍103气相色谱仪热导池检测器、热导池温度控制器和微电流放大器的工作原理。

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The area resistances of eight kinds of ion-exchange membranes were measured by the conductivity cell with higher precision, the results were similar to those provided by the manufacturers.

利用精度高的电导池测定了8种离子交换膜的面电阻，结果与厂家公布的数据相差不大。

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Using GDX-103 as fixing phase in packed column and using thermal conductivity cell as detector, All compositions are separated in the suitable condition by temperature program.

用聚合物固定相GDX-103作柱内填充物，用热导检测器，程序升温色谱法，在最佳色谱条件下，可将样中各组分完全分离。

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The improved conductivity cell is characterized by good stability, shorter delay time ( within 5 min) and better analysis precision about ± 1%.

经改进后的电导池稳定性好，滞后时间小于5min，测定的精确度可稳定在±1%左右。

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Choice of equivalent circuit for Jones type conductivity cell

JONES型电导池测量的LCR电桥等效电路选择

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A method for making micro conductivity cell was described.

本文叙述了制作微型电导池的一种方法。

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When back surface filed has good conductivity, the fill factor can be improved.

当背面场材料具有较好导电性时，电池的填充因子随之提高。

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Contrast state model forecasting thermal conductivity form factor of oil cuts

预测原油馏份导热系数的形状因子对比状态模型

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To enhance thermal-wear resistance of the mandrel, it is required to use mandrel material which has dispersed carbide, linear expansion factor of the base metal close to that of the chide film, minimum elastic modulus and maximum thermal conductivity factor.

为了提高芯棒的抗热损伤性能，应使芯棒材料的碳化物弥散化，基体金属与氧化膜的线胀系数相接近，弹性模量尽量低，热传导系数尽量高。

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Utilizing method of function extremum, it is proved that there lies minimum coefficient heat transmission in sealed vertical air layer, that is to say there exists the minimum theoretical equivalent conductivity factor.

运用函数求极值的方法，证明了封闭垂直夹层中的传热系数存在极小值，即封闭垂直夹层在理论上存在最小的当量导热系数，并推导出了最佳空气夹层厚度的理论公式。

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Research on relationship between particle size distribution of energy storage paraffin and the conductivity factor of phase change energy storage composite gypsum board

石蜡储能颗粒粒度分布与相变储能复合石膏板导热系数的关系研究

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The calculation formula of equivalent conductivity factor in free convection on annular space is determined.

通过试验确定了双重保温管道环行空间自然对流换热在低Cr.Pr数下当量导热系数的计算公式。

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The conventional foaming modes and test devices, including foam volume measurement, electrical conductivity measurement and pressure measurement were presented.

介绍了常用的起泡方式及检测手段，包括体积法、电导率法和压力法，讨论了各方法的优缺点；

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Carbon aerogels are ideal supercapacitor electrode materials due to their sufficient specific surface area, high ratio of mesopore volume, good conductivity and stable physicochemical properties.

碳气凝胶作为一种新型纳米多孔材料，具有高比表面积，高中孔含量、高导电率、稳定的物理化学性能等优点，是制备超级电容器的理想材料。

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Partial coherency analysis can lower the interference of the crosstalk. Meanwhile, some researchers proved that the imaginary part of coherency is not affected by volume conductivity.

偏相干系数分析能降低信号串扰，同时，有研究者证明相干系数的虚部不受容积传导的影响。

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The surface conductivity and volume conductivity of nanocomposites are2~ 4 orders higher than that of pure epoxy resin respectively.

电学性能测试表明当金云母含量为1wt%时，复合材料体积电导率和表面电导率分别比纯树脂提高了2个数量级和4个数量级。

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With the concentration increase of carbon nano-tube, the surface and volume conductivity decreased, and there were a conductive threshold.

随碳纳米管含量增加，聚酰亚胺薄膜的表面电阻率和体积电阻率都有明显降低，并存在一个阈值；

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Ionic charge accumulation at microscopic interfaces and volume conductivity of filled composites

复合绝缘材料微观界面处离子电荷的积累与体积电导率

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Relation between Glass Compositions and Volume Conductivity in Electrode Glass

电极敏感玻璃成分组成与体积电导率之间的关系

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