“项目群评价”的概念、定义、翻译、参考文献-科学参考

单词	项目群评价
释义	项目群评价 Encyclopedia 经济学项目群评价释 program evaluation项目群评价在对各单个项目评价基础上，评价项目组合实施后产生的集群效益大小，各个组成项目实施的相对效果优劣等。
随便看	Doppler equation doppler equation Doppler-Fizeau effect Doppler-free spectroscopy Doppler frequency shift Doppler global velocimetry Dopplergram Doppler guidance Doppler imaging Doppler instability Doppler mapping Doppler meteorological radar Doppler motion Doppler navigation radar Doppler navigation sonar doppler navigation system doppler observation doppleron doppler orbit determination and radio positioning integrated on satellite，DORIS Doppler parameter Doppler peak doppler point positioning Doppler Polar Monitoring Service Doppler positioning doppler positioning by the short arc method

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。