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.
利用光散射测量方法研究了短圆管挤出模头中聚合物熔体取向行为对螺杆轴向振动的响应。
The response of the polymer melt behavior of orientation for axial vibration of screw in short pipe extrusion die head was studied by the light scattering technology.
在振动力场作用下ldpe熔体的粘度减小，随振动频率的变化有一最小值。
The viscosity of LDPE melt decreases in vibration force field and has a minimum value with vibration frequency change.
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