“项目难度”的概念、定义、翻译、参考文献-科学参考

单词	项目难度
释义	项目难度 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	mass selectionof aquatic species mass sensitive detector mass sensitivity mass separator mass service system mass service system with delay mass service system with rejection mass shell mass-shell condition mass-shell subtraction scheme mass social theory mass society mass society theory mass song mass spectra mass spectrograph mass spectrograph, mass spectrometer mass spectrometer mass-spectrometer mass spectrometer for rock & mineral analysis and test mass-spectrometric analysis for isotope mass spectrometric detector mass spectrometric detector (MSD) mass spectrometry mass spectrometry and hyphenation techniques

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。