“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	Cenozoic global cooling Cenozoic ocean-land configuration cenozoic phytoprovince cenozoic sea-level change in China Censer Carved with the Scene of Liu and Ruan Ascending the Heavenly Platform by Zhu Ying Cen Shen censor censoration Censored 1999: The News That Didn't Make the News censored data censored data model censored distribution censored edition system censored quantile regression prediction censored regression censored sample censor-in-chief censoring censoring life test censoring time Censorship Commission of Books and Magazines under the Publicity Committee of the KMT Central Committee Censorship of arts censorship of the media census census for water

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