结晶作用

The simulations show that the air gap is initial at the corner of billet.

过大的结晶器锥度将使坯壳受到结晶器壁的"挤压"作用。

In the high-grade metamorphism and anatexis process, in which sapphirine was formed, the multistage crystallization of minerals resulted in the complexity of the mineral association, such as the differentiation of leuco-and melano-components. Generally, the mafic-rich minerals formed earlier, and the differentiation of magnesio-and iron-components is responsible for the earlier presence of ironrich minerals, i.e., magnesio-rich minerals crystallized later, thus the successive associations of multistage occurred.

在形成假蓝宝石的高级变质-深熔作用过程中，岩石矿物组合的变化主要是多阶段变质造成的，如浅-暗色组分发生了分离，其中含镁铁组分多的矿物较早结晶，而镁铁组分的分离使得相对富Fe的矿物较早结晶，即晚期形成的镁铁质矿物更富Mg组分，并形成递进演化的不同阶段的组合。

And the effects of casting speed on surface fluctuation,surface bareness,slag entrapment and removal of inclusions in the mold were investigated.

通过物理模拟研究FTSC结晶器内的钢液流动行为，考察了拉速对结晶器内液面波动、液面裸露、卷渣及夹杂物去除的影响作用。

In order to improve the crystallization rate of sodium bicarbonate,the method of adding salting-out agent was studied.

为了提高碳酸氢钠的结晶率，研究了采用加入盐析剂的方法，通过盐析剂的盐析作用，使碳酸氢钠的溶解度降低，从而更多地结晶析出。

These results indicate that both the second type leucosome in the biotite gneisses and the first type leucosome were produced synchronously in the Paleoproterozoic granulite-facies metamorphism, and that both the melt-derived and the metamorphic Paleoproterozoic zircons suffered significant lead-loss in the Triaasic, suggesting that both felsic granulite and biotite gneisses be responses to the Triassic deep subduction event.

这表明，第二类浅色体和第一类浅色体都是古元古代麻粒岩相变质作用同期深熔产物。古元古代熔体结晶和变质结晶锆石在三迭纪发生了严重的放射性成因铅丢失，可反映长英质麻粒岩和黑云母片麻岩都响应了三迭纪深俯冲事件。

The rheological and crystallization behaviors of PP/EOC blends showed that increasing octene content in EOC elastomer resulted in a decrease of EOC fluidity, an increase of the adhesive fracture energy with PP and of hindering PP crystallization.

研究了PP／EOC体系流变和结晶行为，发现随辛烯含量的增加，EOC流动性变差，与PP的界面粘结能增大，即相容性提高，对PP结晶的阻碍作用增强。

Results show that the incorporation of tremolite has the function of heterogeneous nucleation to nylon 1010 crystallization. With the increase in tremolite, the crystallization rate of nylon 1010 is enhanced and the Avrami exponent n is slightly decreased.

结果表明：透闪石对尼龙1010结晶起到了异相成核的作用，尼龙1010的结晶速率随透闪石的含量的增加而提高，Avrami指数n略有降低。

The results show that some twin crystals and honeycomb structures appear in the shear plane and many kinds of deformation mechanism exist such as extruding, kinking and so on. When annealed at 550 ℃ for 2 h, the recrystal gains are observed in the shear plane. Especially the side receives the cut of guillotine, the size of recrystal grain is very thin, corresponding with the recrystal grains obtained by cold rolling at 80% deformation rate.

结果表明：经剪切变形后，切面处形成一种独特的带状变形孪晶和蜂窝状变形组织，且存在挤压、扭折等多种变形机制的作用；合金在550 ℃退火2 h后，切面出现许多再结晶晶粒，且在承受剪床切口的一边再结晶晶粒非常细小，相当于冷轧变形80%后的再结晶晶粒尺寸。

Experience shows that the introduced magnetic field can give an effective intervention to the transition of droplet, flowing of molten bath metal, crystalline and nucleation of molten bath and the process of crystalline growth. The magnetic field promotes the refining degree of primary crystallization structure , decreases the chemistry non-homogeneity, So it can strengthen hardness and wearing resistance of weld metal overlay and improve quality of surfacing deposit.

实践表明，利用外加磁场对焊接中熔滴的过渡、熔池金属的流动、熔池的结晶形核及结晶生长等过程有显著作用，使堆焊层的一次结晶组织细化，控制硬质相的分布，减小化学不均匀性，从而提高了堆焊层金属的硬度和耐磨性，全面改善堆焊层的性能。

This has an important meaning to the industrial manufacture.DSC, WAXD and polarizing microscope with hot stage experiments were performed to describe what led the SSP rate acceleration of PET/MMT. It was shown that montmorillonite acted as a very good nucleating agent in PET crystallization process, which results in the lower crystallinity, more small microlites, and more surfaces of microlites.

为研究PET／MMT固相缩聚效率提高的原因，通过热台偏光显微镜、DSC、X-射线衍射等手段对样品的结晶进行观察与分析研究，结果表明蒙脱土对PET的结晶有明显的成核作用，使其晶核生成速率迅速提高，晶核数量明显增多，从而使整个结晶过程的时间变短，同时形成了更多结构不完善的微晶体。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。