结晶

At the present production conditions,the results of trials showed that centerline segregation and central porosity are improved.

对结晶器电磁搅拌改善大方坯质量进行了工业性对比试验，并对电磁搅拌参数进行了优化，在现有的工艺条件下，达到了改善铸坯中心偏析和中心疏松的目的。

In country, Bi xianmei, Suo shutian, etc. can only estimate the temperature and stress interval of this metamorphism and centigram the upper and lower limit by mensurating the crystallinity and other maturity degree parameters of illite, mica, and chlorite, etc. in slate.

在国内，毕先梅、索书田等人，通过测定板岩中伊利石、云母、绿泥石等矿物及多形矿物的结晶度和其它成熟度参数，可大致判断极低级变质作用的温度、压力区间，厘定极低级变质作用的上、下限。

The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

It is the product of centuries.

它是好几个世纪的结晶。

In this study, the modified precipitation and recrystallization processes combined with a controlled calcination process for fabricating the ceria with large particle size and high appearance density was reported.

报导了一种与控制烧结大粒度，高表面比重的氧化铈的过程相结合的改性沉淀与再结晶过程。

The phase, particle shapes, particle size and specific surface area of the doped ceria powders were characterized by XRD, TEM and BET.

利用XRD、TEM和BET等现代物理测试方法对氧化铈纳米粉体的物相、颗粒度、分散性、颗粒形貌和比表面积等性能进行了表征，650℃焙烧的粉体呈现出良好的结晶状态，为立方萤石结构，粉体的比表面积在56.134－27.354

The effect of crystallization process from polymers, control laws of particles from the long-chain structure of polymer, as well as the self-assembly regulatory mechanism of nano-particles from polymer are investigated , through the control of its morphology and properties of precursor order to get large aperture, high specific surface area, has good thermal stability and catalytic cerium oxide particles.

研究聚合物对结晶过程的影响、聚合物的长链结构对粒子自组装的控制规律以及聚合物对纳米粒子自组装的调控机理，通过控制其前驱体的形貌和性能，以期得到大孔径、高比表面积、具有良好的热稳定性及催化作用的氧化铈颗粒。

The results showed that a small number of short carbon chains were introduced into structure of polycarbosilane when mixed ratios of PVC were in the range of 3\%$\sim$7\% by the polymerization.

结果表明，在PVC的引入量适当的条件下，通过共热聚将少量的短碳链引入到聚碳硅烷结构中，使SiC--C纤维的电阻率显著降低到10$^{-1}\sim$10$^{1}\Omega\cdot$cm，并保持了良好的结晶性和耐氧化性。

The structure is the culmination of a three-laboratory, nine-year collaboration among Rockefeller professors Michael Rout and Brian Chait, and Andrej Sali, now at the University of California, San Francisco.

这一核膜孔复合体结构是三个实验室九年通力合作的结晶。洛克菲勒大学的迈克尔。路特和布赖恩。查特与旧金山加州大学的安德烈。

But I also think , these are hobbies,we have no choice to change one's mind.

有错别字，应该是如果你是文化局的官员，你会怎么做以挽救这些文化的结晶？

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了