“natural family planning”的概念、定义、翻译、参考文献-科学参考

单词	natural family planning
释义	natural family planning Encyclopedia 医学避孕释 natural family planning自然避孕法根据女性月经周期和周期中出现的症状与体征，间接判断排卵过程，识别排卵前后的易受孕期，进行周期性禁欲而达到避孕的方法。又称安全期避孕法。
随便看	counseling skills counsellor counsellor-in-chief counselor counselor in colleges and universities count countability countability axiom countable countable additive family countable additivity countable additivity probability axiom countable antichain condition countable base countable cardinality countable chain condition countable compactness countable covering countable degree countable dimension countable-dimensional countable distributivity countable-finite game countable Hilbert space countable infinity

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。