The effects of the grain size and grain gradation of styrofoam particles as well as the expendable polystyrene(EPS)forming tools on the surface roughness of EPS patterns were studied in the paper.
研究了泡沫聚苯乙烯粒径、泡沫颗粒的粒度级配、成型发泡模具对EPS模表面粗糙度的影响。
The bigger the size of intermittent division in discontinuous gradation is adopted, the higher the strength becomes.
间断级配时间断区段的粒径越大，二灰碎石的强度越高。
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