钻头

当在显微镜下使用传统外科钻头手术时，通常容易穿破表面柔韧的骨组织和耳蜗交界面突出的内耳膜。

all cotton drill ladies'men's pants

drill

truck-mounted drill rig【机】;truck-mounted rig【机】;wagon drill【机】

air defense drill

hand-held hammer drill

drill grinding

diamond core drill

turbo drill