The results show that when the high-energy mechanical milling time increases, the relative density of pressed compact decreases gradually under the same compacting pressure.
结果表明，压制压力相同时，粉末压坯相对密度随高能球磨时间的延长而逐渐减小。
Three series of experiments were carried out to observe the effects of composition, presintering schedule, particle size of fe powders, compacting pressure, sintering time and hot-pressing.
进行了三组实验以观察成分、预烧结制度、铁粉颗粒大小，压制压力，烧结时间和热压的作用。
The relative density of pressed compacts, which were prepared by high-energy milling 3%c-cu powders with the same high-energy mechanical milling time, increases with increasing compacting pressure.
高能球磨时间相同时，粉末压坯相对密度随压制压力的增加而增大。
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