“contravariant”概念、定义、翻译-科学时代

单词	contravariant
释义	核科学技术词汇手册 contravariant 逆变的
随便看	education voucher education voucher system education welfare officer （EWO） education within industry education-work relationship Education Writers Association educative purpose educative society educator educator-innovator eductant eduction eduction eduction column eductor eductor edudesmin edulcorant edulcorant edutainment edutainment EDVAC EDVAC--EDVAC (electronic discrete variable automatic computer) EDVAC (electronic discrete variable automatic computer) Edvard Hagerup Grieg

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。