flint backing paper是什么意思

网络释义

1)flint backing paper,石砂纸原纸2)abrasive base paper,砂纸原纸3)garnet paper,石榴砂石纸4)abrasive fiber,砂纸原纸用纤维5)paraffin(ed) base paper,石蜡原纸6)garnet paper,石榴石粉砂纸