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variational
 variational
gen. 变化 的; 因变化而产生的
| calculus
 calculi
tech. 建筑砖
 calculus
archit. 计算
math. 微积分; 计算法

to phrases
variational ['ve(ə)rɪ'eɪʃ(ə)nəl] adj.
gen. 变化〔异,种〕的; 因变化而产生的
hydroel.st. 变化的; 变异的; 变分的; 变量的
variational calculus
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