“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	warp knitted carpet warp knitted coral velvet warp knitted co-we-nit fabric warp knitted curtain warp knitted elastic bandage warp knitted elastic cloth warp knitted elastic fabric warp knitted fabric warp knitted fabric take-up and batched device warp knitted fishing net warp-knitted flannel warp knitted forming shoes warp knitted geotextiles warp knitted gold velvet warp knitted high-pile fabric warp knitted lamp-box fabric warp knitted mattress warp knitted mesh warp knitted packing bag warp knitted pile fabric warp knitted plaited fabric warp knitted power-net warp knitted protection net warp-knitted rench terry warp knitted repair mesh

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。