“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	theorem of equipartition of energy theorem of Euler theorem of Fatou type theorem of fine limits theorem of finite covering theorem of fluctuation dissipation theorem of fluctuation-dissipation theorem of frozen-in field theorem of global existence theorem of Hahn-Banach type theorem of identity theorem of implicit functions theorem of impulse theorem of independent trials theorem of integral transformation theorem of intermediate values theorem of invariance theorem of invariance of dimension theorem of kinetic energy theorem of linear order theorem of linear ordering theorem of maximum modulus theorem of minimum entropy production theorem of moment of momentum theorem of momentum

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