同时考察了美的对象及美的四个演变阶段，从而阐明了美的本质也在不断演变这一事实。
Meanwhile, the article studies objects of beauty and its four evolving stages, thus clarifying the fact that the essence of beauty is continuously evolving.
目的：探索恒定磁场对股骨头坏死相关重要致病因素的抑制作用，从而阐明其治疗股骨头坏死的机制。
AIM: to investigate the inhibitory effect of permanent-magnetic field on the important inducement of femoral head necrosis, and clarify the therapeutic mechanism.
从而阐明了特高频输出信号能量与原始放电脉冲的关系，为进一步探讨GIS放电量特高频标定打下基础。
According to UHF output signals, original PD pulse can be estimated, which contributes to marking GIS partial discharge.
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