目的探讨胎儿脉络丛囊肿产前诊断的临床意义及处理原则。
Objective To discuss the clinical management and significance of the prenatal diagnosis of Fetal Choroid Plexus Cysts.
本文给出各种纤维丛微分几何结构的一个统一处理，首先引进了一个新定义；
The main purpose of this paper is to give a united treatment of the structure of differential geometry of various fiber bundles.
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