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300283

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什么是预氧化法？？？？ ？？ ？
Release time：2014.01.08
Publisher：Hongfeng

预氧化法是指合金熔化后， ，，，，，，，将其液流破碎成细粉， ，，，，，，，合金粉末经内氧化后用一样平常粉末冶金要领举行压制、烧结、挤压。。。。 。。。

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