Statistics analysis result showed that there was a high correlation between the size of gestational sac and body,crown-rump length,head,biparietal diameter(BPD),thoracic depth,heart diameter of embryo or feta and the days after mating.
英
美
- 觀(guān)察胎囊、胎兒、胎心、胎動(dòng)、胎兒臟器、胎兒骨骼出現時(shí)間和測量胎囊大小、冠臀長(cháng)、胎兒身長(cháng)、頭長(cháng)、雙頂徑、胸深和心區大小 ,證明胎囊大小、胎兒冠臀長(cháng)、身長(cháng)、頭長(cháng)、雙頂徑、胸深與胎齡呈顯著(zhù)正相關(guān)。
