（一）空白票据的概念空白票据在英美法上被称为“未完成票据”（Incomplete Instrument），系指票据行为人预行签名于票据之格式纸上，而将票据上应记载事项之全部或部分，授权于他人补充完成之未完成票据。
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Use of the artificial vertebrae made in Shanghai Sixth Surgical Apparatus and Instrument Factory for 2 cases of cervical spine fractures with incomplete quadriplegia was reported.
运用上海手术器械六厂生产的伸缩型人工椎体治疗颈椎骨折伴四肢不完全瘫痪2例。
Objective: To observe the effects of posterior AF instrument internal fixation with indirect decompression on the treatment of thoracolumbar vertebrae burst fracture with incomplete paraplegia.
目的：观察后路af钉内固定装置间接减压对胸腰椎爆裂骨折伴不全截瘫的疗效。
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