“A”概念、定义、翻译-科学时代

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

单词	A
释义	请查阅A--托马斯
随便看	effective sample size effective sample size (ESS) effective scalar permeability effective schooling effective schooling Effective School Movement effective section effective seedling effective sequence effective set effective shear strain effective shear stress effective size of grain effective slip velocity effective sound pressure effective source rock effective space effective span effective speed of transmission effective stack height effective stack height effective statistic effective stimulus effective stock effective stocking