rag(content) perforating paper是什么意思

网络释义

1)rag(content) perforating paper,破布浆打空纸2)rag pulp,破布纸浆3)rag board,破布浆纸板4)rag tub,(破布)半料打浆机5)rag lining,破布浆挂面纸板6)rag(content) plate paper,破布浆书籍纸