高功率密度也带来了散热层面的挑战。电流提升三倍，发热量将呈九倍增长。因此，热管理成为高性能电驱系统的命脉。
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Steve Borthwick has wielded the axe and made 12 changes to his England team to face Italy, picking an entirely different back line as he seeks to salvage his side’s Six Nations campaign with the most radical selection of his tenure.
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Dozens of people have died in the fire and more than 100 left injured.