“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	principle of continuous analytic continuation principle of contradiction principle of convergence principle of convergent intervals principle of coordinated development Principle of Corporate Governance principle of correspondence principle of corresponding state principle of corresponding states principle of countability principle of counting constants principle of cropping system and soil management principle of crosscutting relationships principle of democratic centralism principle of dependent choice principle of dependent choices principle of dependent choices (DC) principle of detailed balance principle of detailed balancing principle of development principle of dimensional chain for assembly principle of direct and oral trial principle of directional duality principle of direct negotiations principle of dissipation

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