“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	graphite-moderated reactor graphite moderator graphite mould casting graphite negative electrode graphite oxide graphite pneumoconiosis graphite products graphite reactor graphite structure graphite supermolecule intelligent materials graphite tube coated with refractory metal carbide graphitization graphitized carbon black graphitizer graphitizing annealing graphitizing treatment graph join graph labeling graph labelling graph lattice graph lexicographic product graph link graph loop graph matching graph matching problem

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