“调和平均指数”的概念、定义、翻译、参考文献-科学参考

单词	调和平均指数
释义	调和平均指数 harmonic average index (统计)
随便看	open-ended system open-ended tubing squeeze method open-end fund open-end investment company open-end investment trust open-end lease Open End Licence (OEL) open-end line open-end method (采矿) open-end mortgage open-end mutual fund open-end pillar method open-end pipe pile open-end roll open-end trust open-end well open-end wrench opener opener boot opener draw rod opener shank open estuary open excavation open-face crown openface crown

科学参考收录了1248194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。