“周期索引”的概念、定义、翻译、参考文献-科学参考

单词	周期索引
释义	周期索引 periodic key
随便看	traffic unit (TU) tragacanth tragacanth glycerite tragacanth gum tragacanthin tragacanth mucilage tragacanth synthetic tragal tragal muscle traget ROM tragi tragion-nasal root tragomaschalia tragus (pl tragi) traied plough trail trail behind trail-behind picker trail-behind planter trail builder trailed trailed air-blast sprayer with engine drive trailed combine with PTO drive trailed cultivator trailed-cultivator plow

科学参考收录了1248194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。