方法回顾性总结采用血管补片成形术治疗单一性左冠状动脉主干病变的手术结果。

Methods Retrospective investigation of results of surgical patch angioplasty in patients with isolated left main coronary artery disease.

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理论和试验研究表明，切削用量参数和刀具几何参数的精确匹配是翅片成形的关键。

Theoretical analysis and experimental results show that accurate matching cutting parameters and cutting-press tool angles are key facts in machining fin.

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挤出工具，制造带有翅片的成形件的方法，和散热器。

Extrusion tool, method for manufacturing shaped article with fins, and heat sink.

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