用所提供的翼状螺丝将黄铜阀门臂附加到塑料阀门臂上。确保锯齿啮合适当。
Attach brass valve arm to plastic valve arm with thumbscrew provided. Make sure serrations mesh properly.
结果：神经纤维瘤病1型4例，表现为蝶骨大翼缺损2例，其中1例合并双侧桥小脑结合臂胶质瘤，1例合并眶内丛状神经纤维瘤；
Results:Among the4cases of NF1,2had defect of the great wings of the sphenoid, bilateral middle cerebellar peduncle gliomas and plexiform neurofibroma respectively.
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