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暴露过程中可对峡部、关节突关节和横突皮质剥除以便进行植骨融合。
The exposure allows for decortication of the pars, facet joint, and transverse processes for bone-grafting and fusion.
利用上限原理和最小能量原理，获得了用楔横轧工艺成形阶梯轴类件时杆部拉断的条件。
With upper bound method and least energy principle, the conditions are established of drawing and breaking workpiece with cross wedge rolling technique to form axial symmetry spare parts.
整个结构划分为若干组合单元，每个组合单元包括拱、桁梁及竖杆横撑架三部分。
The structure is resolved into several compound elements and every compound element consist of three parts: arch, trussed beam and lateral brace.
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