“barrier methods”的概念、定义、翻译、参考文献-科学参考

单词	barrier methods
释义	barrier methods Encyclopedia 医学外用避孕释 barrier methods外用避孕用物理方法（机械阻挡）不让精子到达子宫腔内，或用化学制剂在阴道内灭活精子，也可两者结合，以此阻挡精、卵相遇而避孕的方法。
随便看	Family Seals Collections of Laigutang Studio family selection family selection of aquatic species family size family socialization family social work family soldier family sport family statistics Family Status Family Strategy Family Structure family studies Family Sun at Qingfengzha family support family therapy Family Tree Family-Tree Model family visit Family Wu's Stone Ancestral Shrines Family Yu's Wanjuantang Bookstore Family Zheng in Taiwan FAMOS famous actors of Yuan Zaju drama famous bridge

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。