Parts can be self-tumbled with silicon carbide tumbling grit when aggressive deburring, scale removal and edgerounding is required.
碳化硅翻滚砂砾时积极去毛刺时，大规模清理表面。
2
Rounding a bend in the river, they came in sight of a handsome, dignified old house of mellowed red brick, with well-kept lawns reaching down to the water's edge.