孕中期超声检查
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Second trimester ultrasound
以上为机器翻译结果，长、整句建议使用 人工翻译 。
方法对30例因高危因素就诊的孕妇，利用三维超声仪对孕中期胎儿进行三维超声检查，并随访产后结果。
Methods to check 30 cases due to risk factors among pregnant women attending, use the three-dimensional ultrasound to check the mid-pregnancy fetal, And post-natal follow-up results.
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