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。
Then the powder metallurgy gear is compared with gear made of alloy cast iron.
粉末冶金高强度铝合金是重要的汽车轻量化材料。
PM high strength al alloy is very important light weight material in automobile.
此外，初步探讨了稀土对自熔性合金粉末的作用机理。
Besides the mechanism of rare earth on alloy powder was discussed mainly.
3青铜粉、锡粉、镍粉等各种客户要求合金粉末。
3青铜粉、锡粉、镍粉等各种客户要求合金粉末。
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