“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	vibration analysis of steam turbine vibration analysis of structures vibration and shock generating system vibration and shock meter vibration and shock metrology vibration and shock transducer vibration-chemical combination flooding vibration cleaner vibration control vibration control of engineering structure vibration control of rotor systems vibration cylinder pressure transducer vibration damping vibration damping ballastless track vibration damping material vibration design vibration-detecting laser apparatus vibration detection Vibration drilling vibration drilling vibration effect vibration elimination vibration entropy vibration equation vibration intrusion detectors

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