And along with the increasing of bead diameter, pre-expansion time, pre-expansion temperature, molding steam pressure or molding time, the density of expandable polystyrene (EPS) pattern decreased.

• 随著珠粒粒径的增大、预发泡时间的增加、预发泡温度的升高、成形蒸汽压力的增加或成形时间的延长，模样的密度均呈减小趋势。