对人和环境危害很大 Do great harm to human and environment 胎儿畸形 Cause fetal malformation 危险化学品和高致癌物 A hazardous chemical highly carcinogenic ..
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Pregnant women early in pregnancy if the lack of folic acid, it is easy to cause fetal malformation.
孕妇如果在怀孕早期缺乏叶酸，就容易导致胎儿先天畸形。
Objective To study the possible cause in misdiagnosis and missed diagnosis of fetal birth defect (congenital fetal malformation) detected by ultrasound.
目的探讨超声诊断胎儿出生缺陷(胎儿先天畸形)可能出现的漏误诊原因。
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