“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	acoustic problem acoustic property of metal acoustic quantity sensor acoustic radiation acoustic radiation force acoustic radiation impedance acoustic reactance acoustic reflection law acoustic reflectivity acoustic refraction law acoustic refractive index acoustic remote sensing Acoustic Research Centre acoustic resistance acoustic resonance acoustic resonance, sound resonance acoustic resonator acoustic reverberation room acoustics acoustics assessment technology of fisheries acoustics characteristic measuring instrument acoustic sensor acoustic shell acoustic shield acoustic shock

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