“长度”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	长度
释义	化工词汇手册长度 length
随便看	family demography family dependency period family disintegration family disintegration family economy family enterprise family expenditure survey family expenditure survey--family expenditure survey (FES) family expenditure survey (FES) family expense policy family farming family flour family-friendly family genealogy family god family group family head family head family helper family history family holding listed company family hour family house family household family identity