结晶

The results show that the Avrami equation is able to successfully describe the simulated isothermal crystallization process of PEO.

用Monte Carlo方法模拟了聚氧化乙烯在预先成核条件下的等温结晶过程，并用Avrami方程进行了结晶动力学处理。

Secondly, rheometer and polarized optical microscope were applied to monitor the isothermal crystallization process of polypropylene, and the relationship between crystal morphology and mechanical property was obtained.

第二，利用流变仪监测聚丙烯复合材料的等温结晶行为，将材料的结晶发展过程及形貌变化与材料的力学性能演化对应起来。

Tremolite/nylon 1010 composites with given ratio were prepared by melt process with tremolite of prior modified surface. The isothermal crystallization behavior of the composites was investigated by differential scanning calorimeter. The Avrami equation was adopted to describe the crystallization kinetics.

将经过表面修饰的透闪石与尼龙1010按一定比例共混制成复合材料，采用差示扫描量热法研究了该复合材料的等温结晶行为，并应用Avrami方程对其进行了等温结晶动力学分析。

The effect of the addition of the crystal seed in the jarosite preciptation was investigated and the results showed that the crystal seed would accelerate the crystallizing rate of jarosite formation, which convert the reaction mechanism from the crystallization kinetic rate control into the chemical reaction kinetic control.

阐述了晶种加入对沉矾影响的过程机理，认为晶种的加入加快了沉矾反应的结晶速度，使反应由结晶的动力学控制过渡到化学反应动力学控制，足量晶种加入情形下沉矾过程的活化能为94.66KJ／mol，表明了氯化物体系铁矾沉淀较硫酸盐体系中更易进行。

When lactide was purified byethyl acetate for 4 times, it was pure enough to polymerize to be PLA.

以乙酸乙酯作为重结晶溶剂，当重结晶次数达到四次后，其纯度已达到丙交酯聚合的基本要求。

Under some degree of denaturalization several kinds of modified starch still show Maltese cross phenomena and crystallinity , and maintain characteristics of rigid granules.

利用光学显微镜和X射线衍射对玉米变性淀粉的颗粒形貌和结晶结构进行了研究和讨论，揭示出一定变性度下，不同的变性淀粉仍然具有球晶结构和结晶性，保持其刚性粒子特性。

The crystalline morphology of the novolac/PCL system and the novolac/PEO system displaysa typical "Maltese cross" birefringence pattern, and become increasingly open and irregularwith increasing amount of novolac.

Novolac／PCL体系和novolac／PEO体系的结晶形态呈现出典型的"黑十字"消光双折射模式，随着novolac含量的增加，它们的结晶形态变得逐渐开放和不规则，而且novolac／PCL共混物还具有明显的环带织构。

The effect of misch metal and yttrium on the ageing behavior of AZ91 magnesium alloy was investigated.Aluminum compounds of rare earth and yttrium with high melting point were crystallized fiirstly from the melt alloy during the solidifying process and pushed to the crystalllizing face of α phase to inhibit its growing,or became the nucleation of the matrix.

在AZ91镁合金中添加稀土和钇之后，高熔点的铝稀土化合物和铝钇化合物在凝固过程中首先结晶析出，并成为基体相的形核中心，或者被推移到初生α相结晶前沿，阻碍α相的生长，使其铸态组织得到细化。

The results show that AREEC liquid crystal enables the flow behavior of PC to change from quasi-Newtonian type to pseudo-plastic type, and it can act as heterogeneous nuclei to accelerate greatly crystallization of PET, and then to improve evidently their injection moldability.

将AREEC液晶与PC、PET熔体共混，研究了共混体系的流变行为、结晶特性和可模塑性，证明AREEC液晶能使PC流变行为由准牛顿型变为假塑性幂律型，能对PET起异相成核和显著加速结晶作用，从而大大改善它们的注塑可塑模性。

With the correlation, the second moment of crystal size distribution in the kinetic model of literature was able to be replaced, and the parameters of nucleation and crystal growth rate were able to be directly acquired by computer program design.

利用此关联式，对文献模型中晶体粒度分布函数的二阶矩量进行替换，并结合计算机程序设计，可直接拟合得到结晶体系的成核和生长动力学参数，从而为结晶动力学模型的求解建立了一种新型算法。

It was Napoleon, the immense somnambulist of this dream which had crumbled, essaying once more to advance.

那人便是拿破仑，梦游中的巨人，他还想往前走，去追寻那崩塌了的幻境。

This method alleviates the highly dependent on domain knowledge experts. The quality and efficiency of the KBS were improved.

使用这种设计方法减小了对领域知识专家的严重依赖，提高了知识系统开发的质量和效率。