而被动散热器，根据材料，又分为铝挤型（Al Extrusion）散热器和铝压铸型（Al Die-Casting）散热器；纯铝鳍片式（Fold-fin）是最好的散热器，特殊制造可改为主动散热方式。
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Al-die casting 铝铸件
Al die casting 铝压铸件
al die casting alloy 压铸铝合金
al zn die casting 锌铝压铸
Al alloy casting die 铝合金压铸模
die-casting al 压铸铝
die casting Al alloy 压铸铝合金
die casting al alloys 压铸铝合金
ChimgMing has engaged with metal manufacturing for more than three decades, main business is producing Die Casting parts of al, Zn, mg and precision metal parts.
我司从事金属零件的生产已三十多年，现主营铝、锌、镁压铸件和五金精密零配件。
By the aided of numerical simulation technique we can not only accurate picture the cavity filling process also can predict moulding fault among the die casting et al.
借助于数值模拟技术不仅能较准确的描述铸液的充型过程，而且能预测铸件内部的成型缺陷等。
This paper mainly performs the design and temperature field simulation and research on Al low pressure casting die of cooling system of high-speed train.
本文主要对高速列车冷却系统用铝铸件的低压铸造模具进行了设计、温度场模拟和制造的研究。
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