“π系”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	π系
释义	数学词汇手册 π系 π-system；pi-system
随便看	two-dimensional wave two dimensional wind tunnel two dimensional wing two dimensional wing test two -dimentional character two-dimentional composition two-dollar broker two-dot chain line two-drum boiler two-drum hoist two-drum winch two educational systems two electron one photon transition two E （effective，efficient） two-factor analysis of variance two-factor authentication two-factor authentication (TFA) two-factor authentication--two-factor authentication (TFA) two factor contribution plan two-factor theory two-factor theory two -factor theory two-factor theory two-factor theory Two-Factor Theory