Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/51e9f0000207044e2b2ce8f1d81306c5.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 blunt drill例句_blunt drill英汉例句_blunt drill双解例句_绍翊字体网有道词典
Objective To design a blunt-tipped drill of pedicle screw placement, in order to decrease the accident of pedicle violations during pedicle screw placement. 目的设计一种新型椎弓根钝头钻，以期减少椎弓根螺钉植入的穿破率。