“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	degraded ecosystem degraded grassland enclosure degraded mode degraded neutron degraded phytate phosphorus genetically modified corn BVLA430101 degrader degrading enzymes of pathogens De Graft Hanson degrammaticalization degreasing degree Degree Angular Scale Interferometer degree centigrade degree certificate system degree distribution degree elevation degree matrix degree measure degree of accuracy degree of a central simple algebra degree of acetalization degree of a covariant degree of a curve degree of a cycle degree of a divisor

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