fracture extension的意思|示意

The authors conclude that spondylolysis is mainly the fatigue fracture due to locally increased stress and is contributing most by backward extension of lumbar spine.

作者认为，椎弓峡部裂实质上主要是由局部应力增高而引起的疲劳骨折，而腰椎后伸与其关系最为密切。

The methods to prevent fracture extension are discussed.

讨论了利用人为因素控制裂缝延伸的方法。

Abstract: Fracture failure of junction crank arm of external cylinder retraction-extension actuator of landing gear of Y-7 aircraft is analyzed in this paper.

对运七飞机起落架外筒收放作动筒连接摇臂的断裂损伤失效进行了分析。

The movement and breakage of top coal, especially its internal micro-fracture extension, are closely related to the movement regularity of its immediate roof and main roof.

顶煤的运移与垮落，尤其是内部微观裂隙的扩展，与其直接顶和老顶岩层的活动规律密切相关。

Although it is hard to avoid the sources of fracture, the longitudinal fracture failure on the box joint can be prevented if proper measures are taken to prevent further extension of the fracture.

虽然裂纹源很难避免，但如果能够阻止裂纹的扩展，也能够防止钻杆内螺纹接头纵向开裂失效。

In elective extension osteotomies, the surgeon manipulates the head to generate osteoclasis, temporarily producing an unstable cervical fracture.

择期进行后伸截骨术时，医生持住患者头部进行“折骨”，临时造成不稳定颈椎骨折。