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 show that the more enhancing the bubble nucleation and the larger the amount of the foaming agent, the smaller the bubble cell size.
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。
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.
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。
The results showed that the imposed vibration may increase effectively the bubble nucleation rate, which was better than that via increasing rotation speed.
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。
After analyzing the physical process of polyurethane foam formation, such conclusions can be got: bubble nucleation and bubble growth affect cell size primarily.
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。
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.
针对微孔塑料挤出的全过程，对影响气泡成核、成长及泡孔密度的诸多因素如预定型压力、熔体温度、粘度、气泡界面张力、定型卷取速度。
Many factors affecting cell nucleation and cell growth among the extrusion process such as preshaping pressure, melt temperature, melt viscosity, interfacial tension, take-up speed and the te.
针对微孔塑料挤出的全过程，对影响气泡成核、成长及泡孔密度的诸多因素如预定型压力、熔体温度、粘度、气泡界面张力、定型卷取速度。
The influence of technological condition on cell nucleation was studied in microcellular plastics extrusion processing for supercritical CO2/PS by a finite element method CFD.
倒啤酒的时候也会起泡，不过即使啤酒已经倒好了，溶解在酒里的气体，主要是二氧化碳，就会跑出来并在玻璃杯壁的成核处变成小气泡。
The act of pouring will generate foam in beer, but even once the beer is poured, dissolved gas, chiefly carbon dioxide, will break out into small bubbles at nucleation sites along the glass wall.
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 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 nucleation of bubble is a key stage of the process of extruding microcellular when using supercritical CO_2 fluid as foaming agent.
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