Founding - technical conditions of delivery - additional requirements for zinc alloy castings 铸造.交付技术状态.锌合金铸件附加要求
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Founding . technical conditions of delivery . part 6 : additional requirements for zinc alloy castings 铸造.交货技术条件.第6部分:锌合金铸件附加要求
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Founding - technical conditions of delivery - part 6 : additional requirements for zinc alloy castings ; german version en 1559 - 6 : 1998 铸造.交货技术条件.第6部分:锌合金铸件的附加要求