multi-port英mʌl'tɪp'ɔːt美mʌl'tɪp'ɔːtCOCA²⁵⁴³³⁷⁺⁶BNC¹²⁶⁴¹⁶⁺⁴ 基本例句 n.多港¹⁰⁰ According to production experience, the cracks reason of D97 multi-port tube during continuously extruding is analyzed. The improvement method is also presented. 根据生产经验,分析了 D97多孔扁管连续挤压时开裂的原因,并提出了改进措施。 cnki