Methods Using sectional structure; two inserting ways and bolt-retained unit.
方法：采用两段式义齿结构、两个就位方向和插销锁连接固定。
Objective: To investigate the sectional structure and provide morphological evidences for diagnosis of ct and MRI.
目的：研究髋关节的断层结构，为MRI诊断髋关节病变提供形态学基础。
All blades on the fan impeller of the fan impeller device are made into a sectional structure in the axial direction of the fan impeller.
其风扇叶轮上的各个叶片、沿风扇轮的轴向方向制成分段的结构。
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