“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	economic specific frictional head loss economic spy economic stabilization and development law economic statistics economic structure economic structure of society economic system economic system reformation economic systems engineering economic take-off economic territory economic threshold economic transport air velocity economic trial economic types of agriculture region economic types of pastoralism economic ultimate recovery Economic Value Added economic value of water resources economic zone Economic Zone on the west side of the Straits economization economized rational approximation economizer economizer damage

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。