There is a pith cavity on center of vascular bundle in O. minor, O. matsumuranus, O. marginatus and O. americanus.Some species have sclerotic cell or stone cell.是什么意思_There is a pith cavity on center of vascular bundle in O. minor, O. matsumuranus, O. marginatus and O. americanus.Some species have sclerotic cell or stone cell.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句