... item difficulty index 试题难度指数 ; 难度指数 ; 这个百分比称为难度指数 task difficulty index 任务难度指数 index of difficulty 难度指数 ...
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index of degrees of difficulty 难易度指数
·2,447,543篇论文数据，部分数据来源于NoteExpress
One example is the "Rigidity of Employment Index, " which measures between 0 (the best) and 100 (the worst) the difficulty in hiring and firing workers, and also measures mandated benefits, such as vacations, and restrictions on working hours.
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