“外用避孕”的概念、定义、翻译、参考文献-科学参考

单词	外用避孕
释义	外用避孕 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	standardizing the weights and measures system in the Sui Dynasty standard kernel standard labor time standard lamp standard land price(or value)modified approach standard language standard lens standard lens, normal lens standardless analysis standard library standard lighting standard [light] source standard light source standard linear solid standard liquid-in-glass thermometer standard load standard log standard luminance surface standard magnet standard manifold standard map standard mapping standard Markov process standard mass standard material

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。