“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	self-poisoning reaction self-polar self-polar curve self-polar figure self-polarity self polarizability of rock self-polar line self-polar polygon self-polar simplex self-polar tetrahedron self-polar triad of lines self-polar triangle self-polar trilateral self-pollination self-pollution of fishery environment self-polymerization and induced aggregation Self-portrait Self-portrait by Ren Xiong self-positively recursive set self-potential electric field self-potential method self-potential of ore deposit self-powered detection system self-powered detector self-power-generation

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。