“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	overdot overdrive suppression overelaborate overexcitation overexpansion over expansion separation over-exposure overexposure over-expression screening overextension overfall overfalling accident overfault overfield overfishing overfitting overfitting and underfitting overflight exploration overflow overflow architecture in ancient China overflow dam overflow discharge ball mill overflow monitoring technology overflow of toxic and noxious gases overflow probability

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