Besides the mechanism of rare earth on alloy powder was discussed mainly.

此外，初步探讨了稀土对自熔性合金粉末的作用机理。

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Then the powder metallurgy gear is compared with gear made of alloy cast iron.

并对合金铸铁机油泵驱动齿轮和粉末冶金机油泵驱动齿轮加以比较。

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Then the powder metallurgy gear is compared with gear made of alloy cast iron.

并对合金铸铁机油泵驱动齿轮和粉末冶金机油泵驱动齿轮加以比较。

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