The pile top which mainly consists of fine burden can be formed when the burden is sent into BF top charge container .

在料堆的顶部会形成主要由小块料、粉料组成的炉料堆尖，炉料堆尖对高炉煤气流有很强的阻滞作用。

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Users just have to plug their phone into the T-shirt for a quick top-up charge whenever they need it.

用户只要在需要的时候，将手机放在T恤上就可以快速充电。

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Powerful 600 watt electric motor allows the bike to travel for more than 100 miles on a single charge with top speed of 20 mph.

这种自行车配有强大的600瓦特电瓶，充电一次就可以让自行车以最高时速20mph（32公里每小时）行驶100英里（161公里）以上。

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So now that means if this is where the center of positive excess charge lies and on top of it is the center there is no displacement of the charge so there is no net dipole.

所以现在我们说,如果正电荷中心,就位于,那么还是在这里负电荷中心也在这里,所以没有空间偶极。

麻省理工公开课 - 固态化学导论课程节选

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