晶

The hexagonal and monoclinic monazite CePO4 nanowires with a narrow range of diameter distribution and large aspect ratio were synthesized mildly through hydrothermal process at 150 ℃ using CeCl3·7H2O and H3PO4 as the raw materials. The crystal structure, micro-morphology, and photoluminescence of the nanowires were characterized by XRD, TEM, HRTEM, and UV spectrophotometer.

以铈盐和磷酸为前驱体，经水热合成获得了高长径比的具有六方晶型和单斜晶型独居石结构的CePO4纳米线，采用XRD、HRTEM、SEM和荧光光度计对其晶相组成、形貌及发光性能进行了表征。

The crystallization form of porous glass-ceramics belong to volume crystallization; the parawollastonite which was the main phase was monocline chain structure ZM type wollastonite, with long needle crystal or short rodlike crytal.

为了研究多孔微晶玻璃的保温性能，根据伟晶岩多孔微晶玻璃的内部组成以及孔隙率情况，作者提出了三种热传导的理想等效物理模型，推导出了数学公式，验证了多孔微晶玻璃的导热系数。

The thermodynamic calculations of the Gibbs free energies for typical multiple phase equilibria in silicate systems were performed,including (1)melting reactions of silicate reactant in processing of the glass-ceramics;(2)sintering reactions in utilizations of nepheline syenite and high- flyash;(3)crystallizing reactions of tobermorite and xonotlite .

对硅酸盐体系的典型多相平衡反应进行了热力学计算，包括：(1)微晶玻璃制备过程中的硅酸盐熔融反应；(2)霞石正长岩和高铝粉煤灰利用技术中的硅酸盐烧结反应；(3)S iO2-CaO-H2O体系和KA lS i3O8-CaO-H2O体系雪硅钙石、硬硅钙石的水热晶化反应；(4)高铝粉煤灰和霞石正长岩烧结产物的溶解反应；(5)Na[A l4]-A l3-H2O体系和Na2SO4-Ca2-H2O体系中α-A l3和CaSO4.2H2O的析晶反应。

The onset crystallization temperature of a-Si is effectively lowered due to the formation of Ni silicide, and the crystallization depends strongly on the migration of NiSi〓 precipitates.

对晶化的机理研究表明，a-Si在低温下的晶化是由于形成了Ni的硅化物，其晶化的发生是由于NiSi〓的迁移，其迁移的驱动力是由亚稳态的a-Si转变为c-Si。

The starch granule is a kind of multi-crystal system which is comprised of crystalline structure, noncrystalline structure and submicrocrystalline structure.

杨景峰，罗志刚，罗发兴（华南理工大学轻工与食品学院，广东广州510640）摘要：淀粉是一种天然多晶聚合物，是由结晶、亚微晶和非晶中的一种或多种结构形成的。

The addition ofβnucleator is favorable to formβcrystal and cause more a crystal transform toβcrystal.

成核剂的加入还有利于iPP中β晶型的形成，诱导了相当一部分α晶型向β晶型转变。

Y_2O_3 and the mixed rare earth oxides appeared to be an a and β-nucleator and La_2O_3 is an α-nucleator for iPP.

结果表明不同的iPP/稀土氧化物复合材料中iPP的晶型不同，Y_2O_3和稀土氧化物是iPP的α和β晶成核剂，La_2O_3是α晶成核剂。

The results show that after adding B nucleator , the crystallographic form of PP was transformed fromαtoβ, the initial crystallization temperature increased obviously, the total crystallization time shortened.

结果表明，添加β晶型成核剂后，PP由α晶型向β晶型转变，起始结晶温度明显提高，总结晶时间缩短，结晶活化能降低。

Pimelic acid is a weak β nucleator ,the β crystal form which induced is not stable and transforms to αcrystal form during heating,so the DSC peaks widen.

庚二酸是低活性β晶型成核剂，生成的β晶型不稳定，易在加热时转变为α晶型，造成DSC熔融峰变宽。

The results proclaimed that nucleator C caused the thinner spherulites of POM and a greater growth rate, which was a three dimensional heterogenous growth process, and the crystal system of POM was not changed, but the crys-tallinity of POM decreased, the crystallite size of POM increased.

实验果表明，成核剂C的加入，使POM球晶细化，结晶速度加快，结晶过程为异相成核三维生长过程，且不改变POM的结晶晶型但结晶度略有下降，微晶尺pp成核剂寸增大。

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％。