Characteristics and Pattern of Change in Nitrogen, Phosphorus and Potassium Content in Various Organs of a Precocious Walnut Cultivar at Its Different Growth Stages是什么意思_Characteristics and Pattern of Change in Nitrogen, Phosphorus and Potassium Content in Various Organs of a Precocious Walnut Cultivar at Its Different Growth Stages在线翻译_英语_读音_用法_例句