The results show that the more enhancing the bubble nucleation and the larger the amount of the foaming agent, the smaller the bubble cell size.
研究结果表明：气泡成核数越大，物理发泡剂的含量越高，泡孔半径越小；
The results showed that the imposed vibration may increase effectively the bubble nucleation rate, which was better than that via increasing rotation speed.
实验发现，提高转速可以提高熔体的剪切应力，从而提高气泡成核率，但不如施加振动效果明显。
After analyzing the physical process of polyurethane foam formation, such conclusions can be got: bubble nucleation and bubble growth affect cell size primarily.
通过对泡沫合成中的物理过程系统分析得出：泡沫的孔径大小主要受气泡成核与气泡生长两阶段的影响。
The foaming process of NFA was studied. The results show that the melt foaming process is actually a homeostasis process of bubble nucleation, growth, rheology and collapse.
对以NFA作发泡剂的熔体发泡过程分析表明，发泡过程实际上是熔体中气泡的形核、生长、流变和破裂的动态平衡过程。
In the foam process of cellular plastics, bubble nucleation has decisive effect on cell density and cell distribution, so it is the crucial factor to control the foam quality.
前人对泡沫塑料气泡成核过程的研究基本上都是以经典成核理论为基础进行的。
The relation of bubble nucleation rate and degree of superheat, and phase change driving force and phenomenological coefficient, were analyzed based on phenomenological theory, respectively.
基于唯象理论，分析了汽泡核化速率和过热度以及相变驱动力和唯象系数的关系。
Because classical nucleation theory supposes that bubble formation is occurred under static state, it doesn't reflect the effects of dynamic factors on bubble nucleation, such as shear and elongation.
经典成核理论假设气泡核的形成是在静态条件下发生的，它没有反映在口模流场中动态因素(拉伸、剪切等)对气泡成核的影响。
The nucleation of bubble is a key stage of the process of extruding microcellular when using supercritical CO_2 fluid as foaming agent.
气泡的成核阶段是采用超临界CO_2流体挤出微孔发泡塑料的关键成型环节。
The results showed that nanoparticles accumulation at the vapor-liquid interface decreased embryo bubble radius and the potential barrier of nucleation, facilitating liquid nucleation.
结果表明，纳米颗粒在界面处的吸附可减小核化的平衡胚泡半径，降低沸腾核化势垒，有利于核化的发生。
In this paper on the basis of the classical bubble dynamics, a new model is brought forward for the bubble growth in a nucleation boiling system-the comprehensive interface model.
本文在经典汽泡动力学理论基础上，提出了描述汽泡生长过程的综合界面模型。
In this paper on the basis of the classical bubble dynamics, a new model is brought forward for the bubble growth in a nucleation boiling system-the comprehensive interface model.
本文在经典汽泡动力学理论基础上，提出了描述汽泡生长过程的综合界面模型。
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