...,免费经济学论文 关键词：效率研究；水泥上市公司；dea-tobit；malmquist生产力指数????? [gap=848]keywords：efficiency study ;cement listed companies; dea-tobit; malmquist productivity index ..
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operating efficiency study 经营效率研究
study efficiency 学习效率 ; 提高研究效率
efficiency of study 学习效率
low efficiency of study 学习效率低
Study efficiency curve 学习效率曲线
raising study efficiency 提高学习效率
mathematics study efficiency 数学学习效率
combustor efficiency similitude study 燃烧室效率模化试验
study on efficiency 效率研究
At the began of this paper, the relationship between infrastructure and national economics was introduced. And then, the investment efficiency study in china and foreign country was summarized.
本文首先介绍了基础设施的特点及其与国民经济发展的关系,然后对目前基础设施的投资效率研究状况进行了概述。
参考来源 - 基于malmquist·2,447,543篇论文数据，部分数据来源于NoteExpress
It is also the theoretical foundation of security market efficiency study in standard finance.
首先，论证了行为金融是一种证券市场效率研究的更适合方法。
Relax is not a waste of time for it can improve your study efficiency.
休息放松并不是浪费时间，因为它可以提高你的学习效率。
Don't drive yourself too hard because keeping a balance between study and play can improve your efficiency.
别把你自己逼的太紧了，因为平衡学习和娱乐可以提高效率。
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