parent bore diameter

The influences of temperature, content of foaming agent and CaCO3 on the extrudate swell, and average cell diameter of polypropylene foam are investigated using improved capillary rheometer.

利用改进后的毛细管流变仪研究了温度、发泡剂与碳酸钙含量对聚丙烯发泡体系挤出胀大和泡孔直径的影响。

Through theoretical analysis and experimental data,the effect of matching between piled anchor and drilling hole diameter on anchoring strength was described,and the most reasonable matching parameters of anchor diameter with drilling hole diameter were given.

通过理论分析和实验数据论述了锚杆与钻孔直径匹配对锚固强度的影响,并给出了锚杆直径与钻孔直径最合理的匹配参数。