“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	Seashore Old Acquaintances seashore paspalum seashores and islands seashore swimming ground Sea Sickness Seaside Nursery Rhymes Seaside of Jiaodong Peninsular Scenic and Historic Area sea slug sea snake sea snake subfamily season seasonal and trend decomposition using Loess seasonal aspect for planting landscape seasonal camp seasonal component seasonal continuous grazing seasonal fluctuation seasonal forage-livestock mismatch seasonal grazing production systems seasonal history seasonal isolution seasonally polyestrus seasonal maintenance of aircraft seasonal model seasonal pasture

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