前作残留
Residue of previous cropping
以上为机器翻译结果，长、整句建议使用 人工翻译 。
本实用新型属于医用骨壁扩孔器，适合于各类骨折损伤愈合后需取出残留螺钉前作骨壁扩孔用。
The utility model belongs to a medical bone wall reamer which is suitable for reaming a bone wall before extracting a left screw after the healing of all kinds of fracture damage.
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