“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	Central University of Ecuador Central University of Finance and Economics Central University of Venezuela central vacuole Central Valley central value central vector field central venous pressure central village construction central village planning central vowel central warning system Central Water And Power Research Station in India Central Yunnan urban agglomeration centration centration error centre centre axle trailer combination Centre de Donnees Stellaires Centre de Données astronomiques de Strasbourg centre-feed Centre for Agriculture and Biosciences International Centre for Black African Arts and Civilizations, Nigeria Centre for Research and Restoration of the Museums of France centre impression flexo printing press

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