Studies on the Nitrogen State of Leaf, Culm and Sheath at Different Layers in Canopy and Their Relationship with Grain Quality in Winter Wheat是什麼意思_Studies on the Nitrogen State of Leaf, Culm and Sheath at Different Layers in Canopy and Their Relationship with Grain Quality in Winter Wheat在線翻譯_英語_讀音_用法_例句