Xps foamed board , has a perfect closed - pore alveolate structure Xps挤出聚苯乙烯发泡板材，具有完美的闭孔蜂窝状结构。
2.
Workplace air . x - ray determination of the conventional alveolate fraction of crystalline silica . sampling by membrane filter 工作场所空气. x射线测定结晶二氧化硅的常规蜂窝状部分.用薄膜过滤器取样
3.
Workplace air . x - ray determination of the concentration of crystalline silica alveolate deposit . sampling by means of rotary cup device 工作场所空气. x射线测定结晶二氧化硅蜂窝状沉积物的浓度.用转动杯装置取样
