metal powder短语¹⁴⁴⁹⁷²⁺² 基本例句 n.金属粉末 Powder/span> metallurgy Fig. 5.1 uses sintering process for making various parts out of metal/span> powder. The metal powder is compacted by placing in a closed metal cavitythe die under pressure. 粉末冶金图5.1采用烧结工艺将金属粉末制成各种各样的零件。金属粉末放在封闭的金属腔模具中在压力下被压实。 mapeng