As it is mentioned in many studies that one major advantage of the backward sliding mechanism of lag screw is controlled compression of fracture with weight bearing which helps in healing of fracture.
正如多数研究所提到的拉力螺钉的一个主要优点是反向滑动机制，能在负重条件下对骨折施加控制性加压，促进骨折的愈合。
Tennis is the more backward event in China's advantage event-group, It has the potential of transforming to advantage event.
网球是我国优势项群中较落后的项目，有向优势项目转化的潜力。
Tennis is the more backward event in China's advantage event-group, It has the potential of transforming to advantage event.
网球是我国优势项群中较落后的项目，有向优势项目转化的潜力。
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