Spring force of blade for the technical teaching scientific -

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  机译： 使用插图作为记忆辅助的教学系统-最小使用带状插图。教技术或科学原理的文字

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  机译： 电磁力科学原理的线圈式教学工具

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• 1. Comparison between Forceps, Single Blade Forceps and Manual Extraction of Fetal Head in Elective Caesarean Section: A Randomized Control Trial—Forceps Delivery in Cesarean Section [J] . Ahmed Sherif Abdel Hamid Abdel Wahab ,Ashraf Sobhy Aboulouz . 妇产科期刊（英文） . 2018,第1期
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