计算不同叶长，叶宽，孔数的喷丝板毛细孔的当量直径，单孔流量，剪切速率，喷头拉伸比，三叶异形孔压力降和异形度。
The diameter, flow, shear rate, draw ratio, pressure difference and degree of profile in different configuration of capillary hole were calculated.
本文提出其以流量为准的当量直径公式，以利于系统计算。
In this paper we deduce the circular equivalent of the flat-circular on the basis of equal flow rate and resistance to flow in both ducts.
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