Danger of injury by sharp-edged burrs on sill covers !

门槛板护面上锋利的毛刺有造成伤害的危险！

Burrs should not hurt the hand .

毛边以不伤手为原则。

Also check the shims for burrs and damage .

还应检查垫片有无毛刺，是否损坏。

Tool with sharp edges and burrs .

带锐边和毛刺的工具。

Composites can delaminate , and burrs and fibers show on poorly drilled holes or poorly trimmed edges .

复合材料容易分层剥离，加工产生的毛刺和纤维表明钻削的孔或铣削的边缘质量很差。