variationaladj.变化的；变化性的；因变化而产生的variationn.变种；变奏曲；变动；变化variational indexes变折射率variational methods变分方法variation iterative变分迭代variation of runoff径流变化variational problem变分问题variational process变差过程variational formula变分公式variation rough set变异粗集variation induction诱变variational adjoint变分伴随

1. Tomorrow we'll have a history test.
   明天我们将进行历史测验。
2. The boys were given an intelligence test.
   那些孩子们接受了智力测验。