成核

The study of nucleation agent contents indicates that different contents have different effect on glass devitrification degrees, crystal phase amounts and crystal sizes.

不同的晶核剂有不同的作用机理，本文从不同角度对FeS和TiO2的成核机理做了的分析。

The result indicates that the base glass without composite nucleating agent experiences no devitrification in the heat treatment process.

研究表明，晶核剂可以诱导非均匀成核，未加晶核剂的基础玻璃虽然经热处理过程，但仍无结晶相析出。

The study of nucleating agent concentrations indicates that different concentrations have different influences on glass devitrification degrees, crystal phase amounts and cystal sizes.

采用复合晶核剂可以达到双碱效应，其离子堆积密度好，可以促进玻璃体中的溶解，降低界面能，使成核活化能降低。

The rate of nucleation based on this mechanism has been calculated.

根据这样的机构我们得出有序核的成核率。

Based on the amorphous structures of Ni-P alloys derived from X-ray diffraction determination, R〓 or Tp is reasonably explained in terms of the variation in the metal -metalloid bond numbers with P contents according to the rhomb unit structure model .

首先，它对镍晶核的形成有阻碍作用，TU浓度越大，成核所需的过电位越高；其次，在存在镍晶核的表面上，TU对镍颗粒的生长起促进作用，藉此也可解释TU对化学镀层形貌的影响。

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。

The results show that increase of the pre-expansion pressure, decrease of the pre-expansion temperature and the nozzle diameter result in increase of supersaturation and nucleation of the supercritical solution and decrease of the particle size. The supersaturation in the course of RESS can reach 10〓 and nucleation rate is about 10〓 particles m〓s〓.

计算结果表明，预膨胀压力增加，超临界溶液在快速膨胀过程中过饱和度提高；预膨胀温度提高，超临界溶液在膨胀过程中的过饱和度和成核速率降低；喷嘴的直径减小，流体密度降在膨胀过程中增大，从而导致溶液的过饱和度和成核速率提高。

On the base of basic formula, it discussed effects of kinds and content of bubble nucleators on property of foaming materials, and observed and analyzed bubble structure.

在确定主要助剂最佳用量的基础上，探讨了泡孔成核剂种类、用量对发泡材料性能的影响，并对不同成核剂制得的材料泡孔结构进行了观察和分析。

The results showed that when PA1010 was filled with 1.5% n- SiO2, the properties of the coating was best .The coating-substrate adhesion stress was 28.9 MPa . The self-strength of the coating was 69.8 MPa. DSC analysis shown that n- SiO2 could increase the crystallization speed of PA1010 coatings obviously.

结果表明：当复合涂层配比为m(PA1010)：m(n- SiO2)=100.0： 1.5时，复合涂层综合性能较佳，涂层自拉伸强度为69.8 MPa，涂层与基体结合强度为28.9 MPa；纳米SiO2有明显的异质成核作用，使复合涂层的过冷度由27.0 ℃下降为24.0 ℃；纳米SiO2能够显著提高涂层的力学性能，有助于提高复合涂层的结晶速率，具有明显的成核作用。

There are three stages in the formation process of illite fundamental particle:① the nucleation stage of 2-nm thick illite particle at the incipient process of montmorillonite illitization;② the simultaneous nucleation and growth stage and ③ the surface-controlled growth stage.

伊利石单元粒子的形成过程有三个阶段：蒙脱石伊利石化过程中2nm厚的伊利石粒子的成核作用阶段、成核作用与生长作用阶段和表面控制生长阶段。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。