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prenatal diagnosis
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在胎儿出生前,了解胎儿在宫内的发育状况的各种检测手段。又称宫内诊断或者出生前诊断。
医学
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prenatal diagnosis
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应用生物化学、分子遗传学、细胞遗传学、免疫遗传学、影像学等技术,对胎儿是否患有重大遗传性疾病或先天畸形进行的诊断。
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rating scale
ratings fulfilled
Rating Standards for Cultural Relic Collections
rating system of for-profit publishing units
ratio
ratio chromatism
ratiocination
ratio control
ratio control system
ratio data
ratio distribution
ratio enhancement
ratio ergodic theorem
ratio-ergodic theorem
ratio error
ratio estimate
ratio estimator
ratio imputation
ratio level
ratiometer
rational
rational action
rational action paradox
rational agent
rational amicable pair
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