结晶

The research was mainly based on the formation condition of crystalline ammonium yttrium carbonate and the variation characteristics of pH value during the crystallization in which NH4HCO3 was used to precipitate yttrium ion.

对碳酸氢铵沉淀钇时碳酸钇铵复盐结晶的形成条件与pH变化特征进行了研究，发现其结晶过程与平衡溶液pH有对应关系。

Amino desacetoxycephalosporanic acid (7 - ADCA) is an ampholyte.

7-氨基去乙酰氧基头孢霉烷酸是两性化合物，从等电点两侧改变溶液的 p H值都可以产生过饱和度并结晶得到晶体产品，本文对 7-ADCA两种方法结晶的初级成核过程进行了研究。

Analytical results of differential scanning calorimetry DSC and X-ray diffraction XRD indicated that after compression molding,the melt temperature of PLLA crystals decreased while the degree of crystallinity increased.

差示扫描量热DSC分析和X-射线衍射XRD分析表明PLLA模压成棒后，PLLA的结晶熔点下降，微晶尺寸变小，而结晶度增大。

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。

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。

Pyroxene megacrysts formed under the temperatureof 1200.85-1288.85℃ and the pressure between 0.93 and 1.67GPa, amphibole megacrysts crystallizedunder the pressure of 0.83-0,89GPa, temperature about 1000℃, and anorthoclase maybe at thetemperature of 900℃ around.

辉石巨晶形成的温度压力范围分别为1200.85—1288.85℃和O.93—1.67Gpa，角闪石结晶温度在1000℃左右，压力为O.83一O.89GPa之间，歪长石巨晶结晶温度可能在900℃左右。

Based on major and trace elements and isotope geochemical data, it is inferred that Sandouding suite is formed by magma melting of Late Archeozoic continent tholeiite source, and its geochemical variation is controlled by hornblende fractional crystallization. Besides fractional crystallization, the geochemical variation of Huanglingmiao suite is related to the mixing between dacitic magma and felsic magma. Dalaoling suite is probably derived from early Precambrian volcanics.

根据岩石化学和同位素组成推断，三斗坪岩套的源岩主要是晚太古代大陆拉斑玄武岩，母岩浆相当于英安质，岩套内的成分变化主要受角闪石分离结晶作用控制；黄陵庙岩套除受分离结晶作用影响外，成分变化主要与英安质母岩浆和某种长英质岩浆的混合有关；大老岭岩套的源岩亦为早前寒武纪火山岩。

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。

Basanite and tephrite from Mt. Crater, Cape Bird and southern bank of Bonney Lake are considered as a major result of partial melting of equilibrium in the mantle, fusibility f=1. 5-7%, mantle reservior are enriched in LREE and Yb, and latite from Cape Rodeys and Cape Evens as a results of magmatic fractional crystallization, crystallinity F=58. 09-70.72%, its primary magama is almost the same as basanite in study area.

博尼湖南岸、克雷克特山和鸟角碧玄岩是地幔平衡部分熔融作用的产物，地幔部分熔融度f为1.5-7％，地幔源区为轻稀土富集型，并富集重稀土元素Yb；罗德角和伊万思角安粗岩是岩浆分离结晶作用的产物，结晶度F为58.09-70.72％，伊万思角高于罗德角，它们的母岩浆相当于本区的碧玄岩。

There is a good market for betaine,So its synthetic method and purification have captured people's attention.

在介绍甜菜碱市场现状，发展前景及传统生产方法的基础上，重点论述了萃取结晶法生产甜菜碱的原理、特点、萃取剂的选择等，证明萃取结晶法提纯甜菜碱是可行的。

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。