底座螺钉 meaning in Chinese

base screw

Implants for surgery . metal bone plates . holes and slots corresponding to screws with conical under - surface
外科植入物.金属接骨板.与圆锥形底座螺钉相一致的孔和槽
Medico - surgical equipment . implants for surgery . geometry of holes and slots corresponding to screws with asymmetrical thread and spherical under - surfaces in the equipment of osteosynthesis
外科医疗设备.外科植入物.接骨设备中与不对称螺纹和球形底座螺钉相一致的孔和槽几何图形