Objective To determine if calcium phosphate cement can enhance vertebral pedicle screw fixation in the osteoporotic spine through periodical anti-bending test.
目的本实验旨在从周期抗屈试验方面证实磷酸钙骨水泥对椎弓根螺钉固定的强化作用。
The ground test replacement screw drill.
地面测试更换螺杆钻。
Before completing linkage screw in the machining, finished products are needed to do the pre-tensile test.
连杆螺钉在加工完成后成品交验前，要求进行预拉伸试验。
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