Fracturesf骨折fracturen.破碎；骨折vt.破碎；破裂vi.断裂fracture controlling裂缝控制Fracture of six ribs六根肋骨骨折fracture dislocation骨折脱位fracture of mandible下颌骨骨折fracture rock-mass裂隙岩体fracture of the knee膝关节骨折fracture-cave unit缝洞单元fracture of backbone背脊骨折Fractures near joint关节端骨折fracture performance断裂性能