Chemical denucleation is introduced to the study of undercooling.
将化学净化引入深过冷研究。
The DTA method was employed to measure the undercooling of samples during solidification.
利用差热分析法测定了试样在相同冷却速度下的过冷度。
The method of producing the undercooling graphite cast iron by rare earths complex is presented.
阐述了稀土复合变质剂制取稀土过冷石墨铸铁的方法；
The sudden refinement of crystal structure is determined by the high nucleation rate under large undercooling.
确定了超过冷条件下晶体组织的骤然细化起因于大过冷度下的高形核率。
Calculations demonstrate the formation of facets and anisotropic undercooling distribution along the interface.
计算结果显示了小面的形成和界面上各向异性的过冷度分布。
The relation of microstructure evolution vs undercooling in Ni-Si eutectic alloy was systematically investigated.
系统研究了该合金的微观组织演化与熔体过冷度之间的关系。
In this paper the critical nucleation radius of metals under the highly undercooling condition has been drawn out.
本文给出了深过冷条件下金属的临界形核半径。
The transformation rule of diameter of droplets between cooling rate and undercooling can be analyzed in drop tube.
对落管中冷却速率和过冷度随液滴直径的变化规律进行了分析。
The growth velocity of the crystal depends on the undercooling, temperature gradient and original particles in the precursor.
晶体生长速率取决于过冷度、温度梯度和初始粉末颗粒尺寸。
The relationship between the lamellar spacing and the edgewise growth velocity under the specific undercooling is the core of growth kinetics.
特定过冷度下的层片间距与正向界面推移速率的关系是珠光体生长动力学的主要问题。
The results of simulations indicate that the relationship between melt undercooling and box counting dimension of dendrite is close to parabola.
模拟结果表明熔体过冷度和树枝晶的计盒维数呈近似抛物线关系。
The main reason that rare earth cerium can improve elongation of ZA27 alloy is that cerium increases the compositional undercooling of the alloy.
稀土铈改善ZA2 7合金塑性的主要原因是铈增加了合金的成分过冷。
The kinetic coefficient used in this model along the facet region is related both to local undercooling and to local crystallographic orientation.
模型中小面区域的动力学系数与界面上的过冷度及取向角均有关。
The effect of cooling rate and undercooling temperature on the rate and amount of dehydrogenation was studied by magnetic balance simulation method.
用磁秤模拟方法研究了冷却速度和过冷温度对镍铬钢排氢速度和排氢量的影响。
The relationships of cleanness, undercooling and grain size of low carbon steel have been investigated by using of vacuum glass encasement levitation melting.
利用玻璃包熔真空悬浮熔炼等手段研究低碳钢的纯净度、过冷度与晶粒度之间的关系研究表明：随着包熔次数增加，钢中夹杂物含量减少，纯净度提高。
Taking system water undercooling as growth - driving force of methane hydrate, relational expression between methane hydrate growth ratio and undercooling is fitted.
系统水过冷度作为甲烷水合物生长驱动力，拟合出甲烷水合物生长速率与过冷度的关系式。
This paper has researched on the effects of the system pressure, undercooling, inhibitors concentration, gas condensate and the methanol on hydrate formation kinetics.
研究了系统压力、过冷度、抑制剂浓度、凝析油、甲醇对水合物生成动力学的影响。
Low undercooling degree, the rate high back press. On the heating equipments with condensed water and the recovery system engineering, even show its ascendant function.
过冷度小，背压率高。在加热设备和凝结水回收系统工程上使用，更显其优越性能。
Undercooling production technology of bulk nanometer material was introduced, questions to be solved to preparing bulk nanometer materials were pointed out in this paper.
块体纳米材料是纳米材料的重要组成部分，制备块体纳米材料是实现纳米材料大范围应用的关键。
Thermostatic type trap large undercooling, low emission pool water Redu, the use of low-temperature condensed water can be enough sensible heat, energy-saving motive is good.
热静力型疏水阀过冷度大，排凝聚水热度低，能够充足利用低温凝聚水的显热，节能动机好。
At the moment of step changing in velocity, the adjustment of lamellar spacing, the average velocity and the average interface undercooling characterize the hysteresis effect.
相对于阶跃时刻，片层间距调整、界面平均生长速率与平均过冷度的变化均具有滞后性。
The dependence of simulation results on the space step, the initial nucleus radius, anisotropy and undercooling studied, and how to choose the values of these parameters is settled.
研究了空间剖分步长、初始晶核半径、各向异性系数和过冷度对模拟结果的影响，确定了这些关键参数的取值范围。
The main research content for the fabrication of microcrystalline soft magnetically alloys by high undercooling and rapid solidification has also been made out in the present paper.
最后给出了采用深过冷快速凝固技术制备微晶软磁合金的研究内容。
Gauss distribution function was employed to describe the relation between the density of nucleation sites and the temperature and was integrated to get the grain density at a given undercooling.
通过高斯分布函数描述形核质点密度随温度的分布关系，在给定过冷度时对分布函数求积分可得该时刻的形核密度。
An explicit finite-difference method (FDM) was used to model and simulate the solidification of eutectic cast iron by combining heat transfer equations with undercooling nucleation and growth laws.
综合热传导方程与过冷形核、生长规律，用显式有限差分法模拟了共晶铸铁的凝固过程。
An explicit finite-difference method (FDM) was used to model and simulate the solidification of eutectic cast iron by combining heat transfer equations with undercooling nucleation and growth laws.
综合热传导方程与过冷形核、生长规律，用显式有限差分法模拟了共晶铸铁的凝固过程。
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