e ential oil 精油
E ential colour 基本色
e ential amino acid 必需氨基酸
e ential difference 本质区别
quinte ential 精萃的
e ential hyperte ion 与原发性高血压 ; 原发性高血压 ; 高血压病
e ential foodstuff 主要粮食
e ential 基本的 ; 必需的
e ential fatty acid 必需脂肪酸
In calculus, it has not been proved whether or not the equivalent substitution theorem can be applied to the limit calculation of power-exp ential factions.
但对于求幂指函数极限，可重使用等价代换定理，微积分学教程中却没有论及。
With the inclusion of the ort in the Olympic Games, it became obvious that some internationally recognised rules for the three Olympic disciplines were e ential.
随着马术加入到奥运会中，这三项赛事国际认证的规则的基本性变得更为显著。
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