A.5% B.6% C.7% D.8% E.9%
A.最細(xì)粉 B.細(xì)粉 C.極細(xì)粉 D.中粉 E.細(xì)末
A.5號(hào)篩 B.6號(hào)篩 C.7號(hào)篩 D.8號(hào)篩 E.9號(hào)篩