常見例句雙語例句Objective To design a blunt-tipped drill of pedicle screw placement, in order to decrease the accident of pedicle violations during pedicle screw placement.目的設(shè)計一種新型椎弓根鈍頭鑽,以期減少椎弓根螺釘植入的穿破率。 返回 blunt drill