twist flat drill麻花平钻;麻糖平钻
twist t drill麻花钻;旋钻
twist-drill麻花钻
twist-drill spear一种打捞工具
twist-drill cutter麻花钻槽铣刀
fluted twist drill[机] 麻花钻
taper twist drill锥柄麻花钻
twist drill grinder螺旋钻头磨床;麻花钻磨床
Hexagon shank twist drill六柄麻花钻头
N(名词) a drill bit having two helical grooves running from the point along the shank to clear swarf and cuttings 螺旋钻