“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	operating system operating system component operating system, OS operating technique of vehicle under special conditions operating temperature operating voltage operation operation accident rate operation administration and maintenance system operational operational amplifier operational amplifier, op-amp operational calculus Operational Capacity Ratio operational data operational data store operational data store, ODS operational definition operational design and inventory operational effectiveness evaluation Operational Evaluation Regulations for First-class Museums of China (Trial) Operational Evaluation Standard of Private Museums in Suzhou operational excellence operational feasibility operational flight program

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