“永冻层次”的概念、定义、翻译、参考文献-科学参考

单词	永冻层次
释义	永冻层次 Encyclopedia 农学永冻层次释 permafrost layer永冻层次土壤圈中持续多年常年土温≤0℃、处于冻结状态的层次。包括土壤或岩石，以及冰或有机物质。
随便看	attitude level effect attitude maneuver control attitude maneuver for star searching attitude measurement attitude measuring equipment attitude measuring sensor attitude parameter attitude pursuit guidance attitude scale attitude sensor attitude stability attitude stability control attitude transformation model attitude，orbit and trajectory control of lunar probe atto attosecond attosecond laser attosecond physics attosecond pump-probe technique attosecond streak camera attract attractant attracting attracting basin attracting boundary

科学参考收录了854744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。