They noted that previous research had found that changes in diet had a permanent affect on body weight only after some six years.

他们注意到，此前的研究发现，饮食改变大约六年之后才对体重有永久性影响。

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The educational evaluation research based on some specific situation and calmness bears permanent and general significance.

以特定情境为基础的、冷静的教育评价研究，具有长久的、普遍的意义。

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Second, based on research and calculation method of inductance parameters for permanent magnet electrical machine, the finite element calculation and testing method of HEPMSG are presented.

其次，在对永磁电机电抗参数计算方法研究的基础上，提出了该种结构电机的交、直轴电抗参数的有限元计算和测试方法。

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Economic research has documented that temporary changes in tax rates are far less beneficial than permanent ones since consumers spend on the basis of permanent income.

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