“snow-covered days”的概念、定义、翻译、参考文献-科学参考

单词	snow-covered days
释义	snow-covered days 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	association matrix association model Association of African Central Banks Association of African Trade Promotion Organizations Association of African Universities Association of American Literary Agents Association of American Publishers Association of American Railroads Association of American Universities Association of American University Professors Association of Art Museum Directors Association of Arts Administration Educators Association of Bookseller and Publisher Training Organization in Europe Association of Booksellers for Children Association of Canadian Archivists Association of Canadian Publishers Association of Caribbean States Association of China E-sports Association Of China Rare Earth Industry Association of Chinese Left-Wing Writers Association of Chinese Museums Association of Chinese Rural Construction Research Association of College & Research Libraries Association of Cultural Enterprises association of defect

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