essentialia[法] 要素essentialadj.本质的；必要的；重要的n.要素；必需品Essential medicine list基本药物目录essential microelements必需微量元素essential presentations本质表出essential oil inclusion挥发油包合essential hemosiderosis[医] 自发性肺含铁血黄素沉积[症], 卡-格二氏综合征essential growth factor必需生长因子Essential oil of ginger姜精油Essential HypertensioonEssential Service Value基本服务价值Essential eontrol point关键控制点