“vacuum-extraction of the fetus head for midwifery”的概念、定义、翻译、参考文献-科学参考

单词	vacuum-extraction of the fetus head for midwifery
释义	vacuum-extraction of the fetus head for midwifery Encyclopedia 医学助产释 vacuum-extraction of the fetus head for midwifery胎头吸引器助产使用负压吸引器吸住胎头，并通过牵引和旋转使胎头下降的一种助产方法
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