沥清集料方孔筛 (仪器)
筛孔孔径mm | 53 | 37.5 | 31.5 | 26.5 | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.75 | 底盖 |