钛

Among the manganite oxides, Sr-doped LaMnO_3 have been a focus of intensive studies since the discovery of relatively higher Curie temperature and CMR.

在钙钛矿锰氧化物庞磁阻材料中，Sr掺杂的锰酸镧(LaMnO_3)相较于其他材料具有较高的居里温度及相对较大的庞磁电阻特性，其在高密度读出磁头方面潜在的巨大市场更是受到了格外的重视。

Keywords perovskite manganite;pulsed laser deposition;CMR thin film;ANSYS software;heat/mechanics effect;plasma transport;dynamics Monte Carlo;the simulation of thin film growth

钙钛矿锰氧化物；脉冲激光沉积； CMR薄膜； ANSYS软件；热/力学效应；等离子体的输运；动力学蒙特卡洛方法；薄膜生长模拟

This dissertation is relation to SrO(La2/3Sr1/3MnO3)n the manganese oxides with RP structure. We mostly studied the structure and electrical transport properties, The major studies are listed below: The classes of magnetoresistance were introduced, the electron and crystal structure and the mechanism of double exchange of manganite pervosike related to colossal magnetoresistance have been summarized. More attention had also been paid to the advance in the study of RP structure manganite and grain system. The principle and process of sol-gel method were introduced. With sol-gel method a series of different grain size La2/3Sr1/3MnO3 sample were prepared.

本文以Mn3+：Mn4+=2：1的Ruddlesden-Popper结构锰氧化物SrO(La2/3Sr1/3MnO3)n为研究对象，系统的研究了利用溶胶-凝胶法制备的n=∞的La2/3Sr1/3MnO3和n=2的La4/3Sr5/3Mn2O7两个系列样品的结构和电磁性质，主要内容包括以下几点：简单介绍了磁电阻效应的分类，概述了具有超大磁电阻效应的锰基钙钛矿氧化物的电子晶体结构和双交换等相关的物理机理，给出RP结构系列锰氧化物的晶体结构和电磁相图以及研究状况，分析了颗粒系统的研究进展。

Facial appearance and mastication function improved substantially. No exclusive reaction was found in all 53 case.

患者的面部外观和咬合功能均有较大改善，同时未出现钛板排斥反应。

Strong antidumping property: When titanium is affected by mechanical vibration or electric oscillation, its vibration damping time lasts the longest time, compared to that of steel and copper.

抗阻尼性能强：金属钛受到机械振动、电振动后，与钢、铜金属相比，其自身振动衰减时间最长。

The effects of emulsions, pigments, conventional fillers, heat-insulation fillers and film thickness on the reflection and heat-insulation properties under infrared lamp are investigated in order to find the best materials for the heat-insulation coatings. It is found that both the titanium dioxide with high refractive index and the diatomite powder with micro pores possess the optimal reflection and heat-insulation properties, calcium carbonate also has sonic heat-insulation effect. However, the filler such as meerschaum, which in theory possesses the effect, has not shown heat-insulation function.

通过研究涂料配方中所用乳液、颜料、常规填料和隔热填料在红外灯下的反射、隔热和保温性能，发现高折射率的二氧化钛和含有微孔的硅藻土具有最佳的反射和隔热保温效果，轻质碳酸钙和重质碳酸钙具有一定的隔热保温作用，而理论上具有隔热保温效果的填料海泡石等并没有预期的效果。

Based on application state and refinement mechanism of treatment agent of aluminum alloy mele,the paper analyses the effect of rare earth,Al—Ti—B interalloy and Re—AlTiB interalloy on cast structure of aluminum alloy,then the application of compound Re—AlTiC interalloy was studied.

在叙述铝合金熔体处理剂应用现状与细化机理的基础上，分析了稀土添加剂、Al—Ti—B中间合金细化剂以及Re—AlTiB中间合金对铝合金铸态组织的影响，接着对复合添加剂稀土铝钛碳中间合金作了应用研究。

The detailed procedures of the method are as follows: the charging material of Ti-6Al-4V alloy is put into the crucible of an induction skull melter, heated and melted under the environment of high-purity argon and 400-700Pa pressure; pre-coated bars with the TiH2 of the weight accounting for 0.09 to 0.2 percent of the charging material are added in; when the hydrogen-contained titanium alloy in the crucible cools and the temperature drops below 300 DEG C, the charging material is vented off and cooled until the temperature equal to room temperature.

它的具体方法为：将Ti-6Al-4V合金的炉料装入感应凝壳熔炼炉的坩埚中，在压力为400～700Pa的高纯氩气环境中进行加热熔化；然后熔入含炉料质量0.09％～0.2％的TiH2的预制棒；当坩埚中含氢的钛合金逐渐冷却凝固并降温至300℃以下后，破真空，进一步冷却至室温。

［Objective］To study the effect of titanium membrane treated with the bone defects grafting the mixture of antogenous chip bone and Bio-Oss around implant.

［目的］研究应用钛膜在自体骨碎末与Bio-Oss混合骨恢复种植体周围骨缺损中的修复效果。

All of above were higher than those of control side.Conclusions ADM can improve the bone quality, increase bone density and intensity and is an ideal guided bone regeneration membrane for alveolar ridge agumentation with TiNi-SMA distraetor.

脱细胞真皮基质作为屏障膜，能提高牵张区成骨质量，增加骨强度，在镍钛记忆合金牵张成骨过程中是一种理想的引导骨再生生物膜。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。