The Ultra-Fine-Grained copperwith fine structure performs excellent properties,such as ductibility,electrical conductivity and heat conductivity and so on.It has become an important raw material in the following industrial departments as electric apparatus instrument,chemical industry, shipbuilding,aviation and machinery,etc.,and has wide application prospects.

超細(xì)晶銅材因具有微小的細(xì)晶結(jié)構(gòu)而表現(xiàn)出了優(yōu)異的延展性天天视频免费入口国产、導(dǎo)電性以及導(dǎo)熱性等性能，已經(jīng)發(fā)展成為了電器儀表欧美A片最新网址、化工欧美一级高清片、造船、航空黄色工厂在线看、機(jī)械等工業(yè)部門(mén)中的重要原料麻豆A片在线观看，具有廣闊的應(yīng)用前景。

The methods which are used to measure conductivity and the problem dividing erth's surfce into regions for equiv lent conductivity are discussed.

本文給出了我國(guó)中部地區(qū)大地等效電導(dǎo)率的測(cè)量結(jié)果人人草网，分析了所用的測(cè)量方法视频一区二区久久91，討論了等效電導(dǎo)率的分區(qū)問(wèn)題，并為長(zhǎng)波授時(shí)與導(dǎo)航業(yè)務(wù)制作我國(guó)大地等效電導(dǎo)率分布圖提出了具體建議一级婬片又大又长又粗。

Using a model of concrete in which the aggregates are spherical and nonconductive particles, the ratio of the interfacial transition zone electrical conductivity and the matrix electrical conductivity σ_/σ_ were calculated.

利用一個(gè)將骨料看成非電導(dǎo)球形顆粒的混凝土模型Ⅴ片视频免费在线观看，計(jì)算了界面過(guò)渡區(qū)的電導(dǎo)率與水泥漿基體電導(dǎo)率的比值。

It shows that the critical exponents of conductivity, u, are in good agreement with the mean-field percolation value and in clear disagreement with the universal value in three dimension. This nonuniversal behavior can be interpreted as a result of the interaction between CB and polymer. The influences of the property and volume fraction of CB and radiation crosslinking on conductivity and critical exponent were also studied.

發(fā)現(xiàn)電導(dǎo)率臨界指數(shù)u與三維普適值不符男女激情网站，而與平均場(chǎng)逾滲的指數(shù)相吻合国产精品资源网在线观看，認(rèn)為電導(dǎo)率的非普適行為主要是由于炭黑粒子之間和炭黑—聚合物之間的相互作用所引起，考察了炭黑的基本性質(zhì)色综合91、含量和輻照交聯(lián)對(duì)電導(dǎo)率及其臨界指數(shù)的影響人人爽人人看人人硬。

Study on the Percolation Conductive Behavior of the Conductive Composites Using classic statistic percolation theory, the conductivity behaviors of the PET/EG欧美亚洲韩国日本、PA6/EG and PA6/PET/EG composites were investigated, and the percolation thresholds and critical exponents were obtain. The nonuniversal critical exponent should be attributed to the anisotropy of conductivity, the tunneling conduction, the particular structure, the anomaly distributing of the particles and so on.

四、聚合物—石墨導(dǎo)電復(fù)合材料的逾滲導(dǎo)電行為運(yùn)用統(tǒng)計(jì)逾滲理論探討了PET／EG国产AⅤ精品久久久、PA6／EG及PA6／PET／EG導(dǎo)電復(fù)合材料的導(dǎo)電機(jī)理午夜视频在线观看高清在线www，得出了各體系的逾滲值和臨界指數(shù)，并從導(dǎo)電性能的各向異性99ri视频一区二区三区、逾滲值以上的隧道導(dǎo)電機(jī)理欧洲熟妇XXXXX老妇、獨(dú)特的形態(tài)結(jié)構(gòu)、導(dǎo)電粒子的不規(guī)則分布等方面分析了造成臨界指數(shù)非普適行為的可能原因亚洲第一视频网。

In this paper, finite element software ANSYS is used to simulate the thermal conductivity and pressureless infiltration technique is used to produce aluminum infiltrated silicon carbide composite with high volume fraction of SiC. The influence of interfacial thickness and temperature on thermal conductivity and CTE have been investigated and analysed.

本文采用有限元軟件ANSYS對(duì)鋁滲碳化硅復(fù)合材料的有效熱導(dǎo)率進(jìn)行了數(shù)值模擬国际黄色在线视频，用無(wú)壓浸滲法制備了高體積分?jǐn)?shù)的鋁滲碳化硅復(fù)合材料，研究了界面層厚度和溫度等對(duì)鋁滲碳化硅復(fù)合材料的熱導(dǎo)率和熱膨脹系數(shù)的影響伊人久久综合精品永久图片，并進(jìn)行了分析久久99精品国产免费。

The oxide ionic conductivity was increased with the increase of temperature, but the protonic conductivity displayed a maximum at 900 ℃, due to the combined increase in mobility and depletion of the carriers. The fuel cell could work stably.

氧離子電導(dǎo)率隨著溫度的升高而增大，而質(zhì)子電導(dǎo)率在約900℃時(shí)出現(xiàn)最大值av九一，這是由于在陶瓷中質(zhì)子遷移率的增大及質(zhì)子濃度的降低共同影響的結(jié)果欧洲人与动牲交Α欧美精品。

The electronic conduction could be neglected in this case, thus the total conductivity in wet hydrogen was approximately regarded as protonic conductivity.

由于在此條件下的電子電導(dǎo)很小可忽略不計(jì)，該陶瓷樣品在氫氣氣氛中的電導(dǎo)率可近似視為質(zhì)子電導(dǎo)率亚洲欧美中文日韩V日本。

With the increasing of content of selenium, the electrical conductivity and thermal conductivity increase but the Seebeck coefficient decreases.

隨著Se含量的增加日韩性色生活免费观看，樣品的電導(dǎo)率和熱導(dǎo)率逐漸增加，而Seebeck系數(shù)逐漸降低大伊人一区在线视频。

The absolute value of the Seebeck coefficient increases with Sr content, while thermal conductivity and electrical conductivity decreases.

Seebeck系數(shù)的絕對(duì)值升高99er在线视频，熱導(dǎo)率降低，電導(dǎo)率下降乱色熟女一区二区免费视频。