Severe breaks may require an operation to hold the bone together with metal splents plates and sgrowsscrews 严重的骨折可能需要做手术，用金属薄板和螺丝钉把骨头固定在一起。
Use the correctly sized spanner ( preferably a ring , box or socket spanner ) for nuts and bolts 针对不同大小的螺母和螺丝钉使用正确尺寸的扳手，尤其是环状的、箱体或窝形的板手。
Treatment of transverse fracture of patella with percutaneous hollow screw combined with tension band with arthroscope aid 关节镜辅助下经皮中空螺丝钉加张力带法治疗髌骨横骨折
A usually portable device for raising heavy objects by means of force applied with a lever , screw , or hydraulic press 千斤顶，起重机通过杠杆、螺丝钉或水的压力把重物提起的便携式装置
Treatment of the nonunion of the humeral shaft fractures with unilateral multifunctional external fixator frames : a report of15 cases 肱骨干骨折小夹板外固定与钢板螺丝钉内固定治疗比较
My husband has put the screws in the wood as tightly as he can , but they won ' t stop in , they keep slipping out 我丈夫已尽力将螺丝钉紧紧地钻进木头里了。但它们却不牢固，总是松动出来。
Because black results in no displacement or bump , this ensures that the top and bottom of the screw will be smooth 因为黑色结果是没有置换或凹凸的，这保证螺丝钉的顶部和尖部是平滑的。
Smash away , lads ! he was continually saying , and he clutched at the cannon wheels himself and unscrewed the screws “伙伴们，歼灭敌人！ ”他一面说话，一面托着大炮的轮子，旋动螺丝钉。
Surely there were no live , warm editors at the other end . it was all wheels and cogs and oil - cups - a clever mechanism operated by automatons 看来那一头肯定只有轮螺丝钉和注油杯一部由机器人操纵的聪明的机器，不存在有热度的活人。
