A design method of non-symmetry flowing balance for right angle extrusion die of polymeric double-lumen micro-tube
JIN Guobao, WANG Minjie, ZHAO Danyang, TIAN Huiqing
CIESC Journal . 2012, (11): 3478 -3485 .  DOI: 10.3969/j.issn.0438-1157.2012.11.014