Those in the control group not only didn't see a grade increase, they had lower grades than the grading before the study began.

对照组的学生不仅成绩没有提高，而且比研究开始前的成绩还要低。

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In fact, girls who received the intervention matched and even slightly exceeded the boys in math grades, whereas girls in the control group performed well below the boys.

事实上，那些经过干预性比赛的女孩的数学成绩可以超过男生，而在另外一组中的女孩成绩是低于男孩的。

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A many grades hybrid adaptive controller is designed, the problem that high step and complicate controlled object is unstable in tradition adaptive control system is solved.

设计了一种多极混合自适应控制器，解决了高阶复杂被控对象在以往的自适应控制中出现的不稳定问题。

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