搜索 - 科创

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轿车用无线电能传输系统国际标准规范化正在进行轿车目前是全球化商品。体现地域性的只有方向盘左右位置的不同，剩下的全世界基本都相同。所以，搭载于轿车 EV 的无线电能传输系统也需要世界性标准。现...

与电流平方成正比的损耗——焦耳热损耗首先介绍电机控制器。如果存在电阻，则会产生焦耳热（I2 Rt）。损耗与电流（I）的平方成正比，与电阻（R）和时间（t）也成正比。电流流过的所有部分都会产生焦耳...

　　1950年8月15日在我国西藏察隅县发生了一次大地震。此次地震造成山崩地裂，房屋及各类建筑物被震倒，使震区人民蒙受巨大的灾难。据宏观考察资料统计，我国境内死亡约1800人（据档案史料记载统计约24...

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