“item difficulty”的概念、定义、翻译、参考文献-科学参考

单词	item difficulty
释义	item difficulty Encyclopedia 理学项目分析释 item difficulty项目难度被试完成测验项目任务时所遇到的困难程度。一般在学业和能力测验中会较多使用难度来考察项目对于被试的难易程度。
随便看	closed half space closed half-space closed-head foam-water sprinkle system closed hyperplane closed hypersurface closed ideal closed image closed immersion closed injury of larynx closed integration formula closed intersection closed interval closed isotope system closed kernel closed lattice closed lattice ideal closed leveling line closed Lie subgroup closed line closed linear hull closed linear manifold closed linear operator closed linear span closed line segment closed long-axis orbit

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。