Objective To explore ct characters of lumbar posterior superior marginal intraosseous cartilaginous node (LPMN) and it influence on the tissue around LPMN.
目的：探讨腰椎后上缘软骨结节(L PMN)的CT特征，及其对周围结构的影响。
Experiment results show that YY3 circular transverse heated platform graphite tube were more superior in construction and atomization characters, it can be expanded application.
实验表明，YY 3圆形横向加热平台石墨管的原子化性能比较优越，可以推广使用。
Finally the comparison of dynamic characters of structure of composite wallboard and shear wall of reinforced concrete proves that the former is superior in seismic performance to the latter.
最后将复合墙板结构与钢筋混凝土剪力墙结构的动力反应特性进行了比较，结果表明复合墙板结构具有优于钢筋混凝土剪力墙结构的抗震性能。
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