fine emery powder 细金砂粉 ; 细金刚砂粉

medium emery powder 中级金刚砂粉

coarse emery powder 粗金刚砂粉

emery dust emery powder 金刚砂粉

fine abrasive emery powder 细金刚砂

alundum powder emery powder 刚玉粉

powder emery 金刚砂 ; 金钢砂 ; 刚砂粉 ; 金刚砂粉

mediumaltitude bombing emery powder 中级金刚砂粉

emery y powder 金刚砂粉