With the continuous improvement on power density of high-power switching power supply, reasonable thermal design works as a prerequisite to ensure a reliable power supply.
随着大功率开关电源功率密度的不断提高，合理的热设计是保证电源可靠工作的前提条件。
This text mainly points out that the extension of the ring power-supply network in the urban medium-voltage power supply is a comparatively reasonable way of power supply with certain advantages.
文章重点提出在城市中压电网中推广环网供电方式是一种较为合理的具有一定优势的供电方式。
Therefore, we must determine a reasonable limit of the power endowed with mass media, and depend on social forces to supervise the body of mass media with the aim of keeping mass media in good order.
因此，我们必须确定大众媒介权力的合理限度，依靠社会力量对大众媒介权力的主体行为进行控制，实现大众传媒的良性秩序。
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