“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	plane division by lines plane domain plane electromagnetic wave plane except one point plane field plane field of lines plane figure plane-filling curve plane-filling function plane geodetic control network plane geometry plane graph plane grate plane grating plane group plane heterogeneity plane hologram plane intersection management plane involution plane lattice plane layout ofunderground space plane-like plane mirror planemo plane monochromatic electromagnetic wave

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。