“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	right tensor product right three-leafed rose right to claim personality rights right to command armed forces right to communicate right to compensation right to criticize, make suggestion, complaint,charge and exposure right to education right to equal employment right to know right to life right to participate in government and political affairs right to pollute right topological module right topological space right topology right to scientific and technological achievement right to scientific discovery right to silence right to use and develop native language of ethnic minorities right to use energy Right to use financial resources right to use grassland right to use resources and environment right to use the marine area

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