双晶

The study of nucleating agent concentrations indicates that different concentrations have different influences on glass devitrification degrees, crystal phase amounts and cystal sizes.

采用复合晶核剂可以达到双碱效应，其离子堆积密度好，可以促进玻璃体中的溶解，降低界面能，使成核活化能降低。

A series of double metal cyanide complex catalysts were prepared in two different methods by using β-cyclodextrin, PEG-1000 or Tween-60 as an additional complex ligand respectively, and the effects of different kinds of additives and preparation methods on the appearance, particle diameters, crystal constitution and activity of DMC catalysts were also studied.

分别以PEG-1000、β-环糊精和吐温-60等为助络合剂，采用不同工艺方法制备了具有不同结构的双金属氰化物络合物催化剂，研究了不同助络合剂和不同制备方法对DMC催化剂的形貌、粒径、晶型结构和催化活性的影响。

These growth units were absorbed and join the crystal lattice on the growth interface through collision and aggregation.The powders with better crystallinity and double cone or tetrahedron shape were obtained after amorphous ZnS was treated by solventthermal method.

采用溶剂热处理高浓度条件下制备的ZnS无定形粉末，得到晶态结构完整，形状为双锥状或四面体状的粉末。

The results show that the particles character as the growth of anion coordination tetrahedron during solvent thermal treatment, where blende-type ZnS particle is in the shape of double cone or tetrahedron, blend-type CdS appears as the tetrahedron, but wurtzite-type CdS is in the shape of cone. In addition, the particles with the better crystallinity are obtained with the increase of solvent thermal treatment temperature and time.

结果表明：采用溶剂热处理，粉末形状呈现负离子配位多面体生长特征，闪锌矿型ZnS粉末由球形变为双锥状或四面体状，颗粒上有明显的电子衍射花纹；闪锌矿型CdS晶体粉末主要呈四面体形状，而纤锌矿型CdS晶体粉末则以锥状为主，并且粉末的晶型随溶剂热处理温度的升高和时间的延长更趋于完整。

The study shows that the double loop EPR method is appropriate for evaluating the susceptibility to IGA.

结果表明：双环EPR法能定量、定性的检测不锈钢的晶间腐蚀敏感性。

Jin Jin (Paralympic torch-bearer): Abroad, I enthuse over the love and care from Chinese people; At home, I'm grateful to Top Flag who gives the warmth of friend, helps me grow and explores the full strength of mine.

奥运残奥双火炬手金晶——在国外我受到了所有华人的关爱，在国内我感受到了巅峰旗帜的温暖，他们如同我的朋友一般，帮助我真正的成长，去发挥我应有的力量。

Schematic diagram of modern bipolar junction transistor: cross section, layout at the wafer surface.

近代双载子接面电晶体的概要图：截面图，在晶圆表面的布局图。

A kind of weak current sensor using a single amorphous core double-winding multivibrator bridge is studied in this paper.

对采用非晶丝单磁芯双线圈多谐振荡桥制成的弱电流传感器进行了研究：对传感器的工作原理进行了分析，对传感器的信号处理电路进行了设计。

Though Zener's famous double exchange theory can explain the ferromagnetism/metal --paramagnetism/insulator transition and colossal magnetoresistance successfully, but it is only qualitatively not quantitatively due to neglecting the existence of polaron formed by lattice distortion in this theory.

虽然Zener在1951提出的双交换理论可以定性的解释铁磁金属态到顺磁绝缘态的转变和超大磁电阻效应，但是在定量上与实验数据相去甚远，因为该理论忽略了由于晶格畸变而产生极化子的影响。

This process offers comparable performance to GaAs HBTs with the added advantages of mature and high producible Silicon wafer processing.

这一过程提供了性能与砷化镓异质结双极晶体管的成熟和高硅晶片加工可生产添加的优势。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。