“积雪日数”的概念、定义、翻译、参考文献-科学参考

单词	积雪日数
释义	积雪日数 Encyclopedia 农学积雪日数释 snow-covered days积雪日数对于积雪日的定义，在中国积雪研究中存在两种标准，第一种是根据天气现象来定义，即当观测场上视野范围内一半以上被积雪覆盖时，就记为积雪日；第二种是根据积雪深度来定义，即当积雪面积达到观测要求，且其深度达到规定深度（例如0.5厘米以上深度的积雪）时，记为积雪日。
随便看	UNCHR uncia unciform bone uncinate fasciculus uncinate process unciniger uncinus UNCITRAL UNCITRAL Model Law on Electronic Commerce UNCITRAL Model Law on Electronic Signature uncivil individuals uncivilized tribe unclassified tailings consolidated filling Uncle Uncle Boonmee Who Can Recall His Past Lives uncle cousin marriage Uncle Doggie's Nirvana Uncle Ebo Whyte Uncle Suni Uncle Tom's Cabin Uncle Tom’s Cabin Uncle Vanya UN climate change negotiations unclosed unclosed orbit

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。