“menstrual cycle”的概念、定义、翻译、参考文献-科学参考

单词	menstrual cycle
释义	menstrual cycle Encyclopedia 医学月经周期释 menstrual cycle月经周期从一次月经开始到下一次月经开始之间的时间。是女性为了可能的妊娠所做的准备（产生卵母细胞、对妊娠子宫的准备），平均28天。在此期间，生殖系统（如卵巢和子宫）和激素浓度发生规律性变化。 Biology menstrual cycle月经周期
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