复数：fraises
1.【机】铣刀,绞刀,扩孔钻
2.【军】(钢丝网或木桩构成的)障碍物
3.(16世纪欧洲流行的)皱领
1.【机】绞(孔),用绞刀扩大
1.a cone-shaped grooved drill bit used for enlarging a previously drilled hole
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