同义词
1)straight taper shank subland drill,直锥柄阶梯钻2)subland twist drills with parallel shanks,直柄阶梯麻花钻3)counter sinks with parallel shanks,直柄锥面锪钻4)straight taper shank core drill,直锥柄扩孔钻5)straight taper shank twist dril,直锥柄麻花钻6)taperstraight shank dril,锥直柄麻花钻
