The ball sprang back and hit him.
球弹回打在他身上。
The ball sprang back and hit him.
球弹回打在他身上。
The main factor of spring back density is prepressing pressure, next are compression time and compression number of times.The effect of moisture content was not significant.
回弹后密度的影响因子主要压力,其压时和压,而含水率对板坯回弹密度的影响不明显。
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