跳汰机床层
重粒料铺层

Rag \Rag\ (r[a^]g), v. i. [imp. & p. p. {Ragged} (r[a^]gd); p.
pr. & vb. n. {Ragging} (r[a^]g"g[i^]ng).]
To become tattered. [Obs.]