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fetoscope
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fetoscope
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fetoscope
胎儿镜
用直径0.5~2毫米光纤内镜,以套管针从孕妇腹壁穿刺,经子宫壁进入羊膜腔,观察胎儿形体、采集脐血或胎儿组织行活组织检查,以及对胎儿进行宫内治疗的有创检查方法。
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symmetric orthogonalization process
symmetric pair
symmetric part
symmetric points
symmetric polarity
symmetric polynomial
symmetric positive system
symmetric potential
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symmetric quadratic form
symmetric quartic graph
symmetric quasigroup
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