防裂扒钉 anti-split iron ; anti-checking iron

钉断裂 pedicle screw breaking

防裂铁钉 anti-split iron

波形防裂钉 crinkle iron

钉杆撕裂强度 Nail tear resistance

钉孔裂纹 cracks of rivet holes

铆钉头断裂 crack of rivet head

螺钉断裂 screw extraction

裂纹钉铆机理 riveted crack mechanism

马蹄形防裂扒钉 beegle iron