“item difficulty index”的概念、定义、翻译、参考文献-科学参考

单词	item difficulty index
释义	item difficulty index Encyclopedia 理学【基本概念】释 item difficulty index题目难度指数测验题目难易程度的度量指标。
随便看	Pohnpei State pohu POI poid poidometer poikilite poikilitic shergottites poikiloblastic poikilohydry poikilosmotic poikilotherm poikilothermal animal poikilothermia poikilothermic poikilothermy Poincare Poincare Bendixson theorem Poincare-Bendixson theorem Poincare-Birkhoff theorem Poincare Birkhoff Witt basis theorem Poincare-Birkhoff-Witt basis theorem Poincare-Birkhoff-Witt type basis Poincare conjecture Poincare divisor Poincare duality

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。