“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	stagewise stagflation stagger Stagger and Fall Flat on Back staggered Staggered Board staggered [bond] configuration staggered bond configuration staggered circuit staggered configuration staggered conformation staggered cut staggered extention process in vitro recombination staggered heterojunction tunneling field effect transistor staggered mesh staggered phase transition staggered tuning staggering staggering effect staghorn fern staghorn ferns staging altitude stagnant surplus-population stagnate stagnated blood disease

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