晶

He thermal shrinking mechanism of high shrinking PP fiber and change of the super molecular structure in the shrinking process was studied by means of wide angle X ray diffraction and micropolariscope.

运用X－光衍射仪、偏光显微镜及其复合测试技术，对高收缩聚丙烯纤维热处理前后超分子结构变化和纤维热收缩机理进行了研究，结果表明：高收缩聚丙烯纤维必须具有大量高取向非晶区，少量结晶区，结晶度低，晶粒尺寸小，近晶型晶胞。

The measurements display that there occurs three dimensional anomalous expansion in two deferent phases at temperature corresponding to lattice softness.

另外，我们进行了Bi系高温相和Bi系低温相的晶格参数随温度变化行为的比较研究，发现了在对应于出现晶格软化效应的温区上出现了晶格的三维反常膨胀。

And the lattice distance expands anomalously with decreasing particle size. Using the model of long-range interaction and its cooperative phenomena altered by particle size, the size-induced cubic-tetragonal phase transition, the anomalous lattice expansion, and the change in chemical bonding characters have been well understood.

采用长程相互作用的晶粒尺寸效应模型，对钛酸钡纳米晶结构相变、晶格间距异常增加、价键性质变化等实验现象给出了合理的统一的解释；并把该模型扩展到解释与钛酸钡晶体具有不同共价性成分的氮化镓等纳米体系的相变以及晶格结构变化现象。

The beneficial effects of homogeneously distributed boron inside grain on lowering the energy of antiphase boundary and improving brittleness are weakened.

低于此临界浓度，硼在晶内均匀分布；高于此临界浓度，硼在晶界上偏聚，上述硼在晶内均匀分布降低反相畴界能的有益作用被削弱。

Ti-Si composite materials are mixed at atomic scale, and Ti-O-Si bond appears in all of the samples with different TiO2 content; the mixed oxides are mainly existed in the form of amorphous pattern, anatase appears when the TiO2 content is more than 80%, but compared with the intension of pure TiO2, it has not integrate structure. The acetic content has great influence in the specific area and crystal structure of the mixed oxides. 20TiSi has good heat stability, still possesses 11m2/g after calcined at 1100℃; calcinations on the large scale of temperature does not cause the break of Ti-O-Si bond, TiO2 is well dispersed in 20TiSi calcined at 1100℃, and it still existed in the form of amorphous.

结果表明：制得的Ti-Si复合氧化物具有很高的比表面积，在TiO_2含量为10％时达到681.5m~2／g，Ti原子进入Si-O四面体结构中，形成Si-O-Ti键，复合氧化物的稳定性好，当TiO_2含量低于60 wt％时，以无定型形式存在；当含量为80％时，出现锐钛矿型TiO_2，但与纯TiO_2相比晶型不完整：醋酸对Ti-Si复合氧化物的比表面积、晶型都有很大的影响；TiO_2含量为20％的20TiSi经1100℃高温焙烧后，仍有较高的比表面积(11m~2／g)，稳定性好，在较宽的温度范围内焙烧，没有引起Ti-O-Si键的断裂，分散度高，没有出现晶型TiO_2。

We have discussed the changes of spin density and atomic charge on B-site as the crystal parameters are individually expanded or compressed from 0.02% to 0.2%(and, from 0.5%~5.5%).

单晶格及双晶格的计算中，虽然随著晶格膨胀或压缩的维度的增加，Mn中的电子自旋密度和原子电荷的变化均趋缓，但整体而言电子自旋密度仍然受到晶格参数的高度影响。

The crystalline phase of the nanocrystalss is the cubic zine blende, consistent with the results of X-ray diffraction and selected area electron diffraction.

电子衍射、高分辨电镜晶格像和X-射线衍射对纳米晶的晶体结构进行了表征，结果都证实ZnSe纳米晶的结构为闪锌矿结构。

The quaternary GalnAsSb can be used for the bolometer, IR radar, monitoring of the environment, trace gases and other interesting purpose for its special response wavelength. GalnAsSb infrared detectors are novel compound detectors with advantages of fast response, high sensitivity, high stability, low price, especially its character to work at room temperature.

当其晶格参数与InP衬底的晶格参数相匹配时，其覆盖波长基本不变(1.6～1.7μm)：但是匹配于InAs衬底时，覆盖波长从1.7μm变到3.4μm；而与GaSb衬底晶格匹配时AlGaAsSb、GaInAsSb四元系化合物材料可以覆盖从1.7μm至4.3μm的波段，所以GaInAsSb四元系化合物材料在红外成像、红外技术方面有重要的实用价值，同时在未来的超低损耗光纤通信中也具有潜在的应用。

TiO_2 is a very important wide bandgap semiconductor, which mainly include three crystal structures. Anatase and rutile are tetragonal. Brookite is orthorhombic.

TiO_2是一种重要的宽禁带半导体材料，主要有3种晶型，即金红石、锐钛矿和板钛矿结构，其中金红石和锐钛矿属四方晶系，板钛矿属正交晶系。

Main productions: The gem and cabochon kind: Amethyst,Swiss blue,Sky blue,Green amethyst,Pink amethyst, Grape stone,Whisky,Green lemon,Peridot,Garnet,The cottonrose store,Smoky QZ,Crystal and all kinds of natural gems.

主要生产：戒面宝石类：紫晶、瑞士蓝、天空蓝、绿紫晶、粉紫晶、葡萄石、威士忌、柠檬绿、橄榄石、石榴石、芙蓉石、茶晶、白水晶等各种天然宝石。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。