The results show that when the high-energy mechanical milling time increases, the relative density of pressed compact decreases gradually under the same compactingpressure.
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。
2
Three series of experiments were carried out to observe the effects of composition, presintering schedule, particle size of fe powders, compactingpressure, 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。
3
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 compactingpressure.