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.
马氏体相变的软模现象为相变形核机制提供启迪。
The soft mode phenomenon gives an implication for the nucleation mechanism.
目的 ：用间接法制作铸造桩核熔模。
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