“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	the master plan of Guiyang The Masters The Match Between Tang Dynasty's 28 Constellations and 28 Tunes The Match Factory Girl The matching principle The Mathematical Analysis of Logic：Being An Essay Towards A Calculus of Deductive Reasoning The Mathematical Theory of Optimal Processes the mathematical theory of optimal processes thematic activity in kindergarten Thematic Apperception Test thematic atlas thematic chart thematic conceptual matrix thematic decision of mega project thematic dictionary thematic element data acquisition thematic geographic information system thematic geological survey thematic guide thematic map thematic map color index thematic map content design thematic map mathematical model thematic mapper，TM thematic map structure pattern

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。