企业内部效果(within effect) : WE =∑企业间(份额)效果(between effect) : BE =∑交叉(协方差)效果(covariance effect) : CE =∑进入效果(entry effect) : E...
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...ect），在我们的数 据里就是指不同地区之间的差异，另一种是同一组数据内部不同年份之间的差 异，称作组内效应（within effect），在我们的数据里就是指同一个地区不同 年份之间的差异。
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within-growth effect 内部增长效应
The digital services tax now awaits the signature of President Emmanuel Macron, who has expressed support for the measure, and it could go into effect within the next few weeks.
数字服务税目前正在等待法国总统埃马纽埃尔·马克龙的签署，他已经表示支持这项措施，可能会在未来几周内生效。
The repeat experiment carried out by the Tel Aviv University researchers shows that this dietary influence takes effect within just a generation or two rather than over an entire year.
特拉维夫大学通过重做这个实验还发现，不同进食对果蝇求偶对象选择的影响只会持续一代或二代，而不是一整年。
He says the changes went into effect on May twenty-ninth with the goal to process all requests within two weeks.
VOA: special.2009.06.11
That is because they have a cooling effect within buildings.
VOA: special.2010.03.02
The effect are greatest when given within forty-eight hours.
VOA: special.2009.08.05
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