搜索 - 科创

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前戏三月初入藏，一路烦心事。原装插头居然正负极接反，驮包铆钉再而三的轻易断裂，多个设备共用的充电器损坏……骑车前往阿里，作为前期体能拉练，一路上丢三拉四，先是遗了背包捡回，后失了相机包再寻回，...

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ms1175555 发表于 2014-2-7 17:43 这个不能算二极管,应该算是电阻发光碳化硅最早的用途是磨料，随后被用于电子器件中。在二十世纪初，第一批雷达中就是将碳化硅用为探测器的，1907年...

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