1)blunt drill,钝钻2)blunt bit,钝钻头3)dulled bit,磨钝钻头4)a blunt-tipped drill,椎弓根钝头钻5)bit-tooth dullness,钻头牙齿磨钝度6)drill and countersink combination,尖角钝角两用钻
用法例句
Objective To design a blunt-tipped drill of pedicle screw placement,in order to decrease the accident of pedicle violations during pedicle screw placement.
