essentiality
n.本性；真髓；本质；重要性
网络解释.实质性；必要性；精髓；本性
词形变化:
复数：essentialities
necessity requirement
双语例句
1. 1 . Forster established the essentiality of minerals as accessory food factors required for maintaining life.
福斯特证实了矿物质作为辅助食物因子在维持生命方面的重要性。
来自辞典例句