(28.56701.236.7261.7296.7657)
“计算器”是“胎儿体重计算器[指妊娠后未出生的儿体]”的同义词，胎儿体重计算器[指妊娠后未出生的儿体]-胎儿，是指妊娠8周以后的胎体。妊娠4～8周娩出的胎体为胚胎。胚胎期重要器官逐渐形成，在胎儿期各器官进一步发育成熟。胎儿在妊娠28周以前娩出的现象称为流产；孕28～37周前娩出的现象称为早产，孕37周至</br> generated by yvsou girl
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(28.56701.236.7261.7296.7657)
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