搜索 - 科创

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竞选州长［美］马克．吐温　　　几个月之前，我被提名为纽约州州长候选人，代表独立党与斯坦华脱•勒•伍福特先生和约翰•特•霍夫曼先生竞选。我总觉得自己有超过这两位先生的显著的优点，那就是我的名声好。从报上...

引用第1楼jijiwaiwai于2009-06-29 00:26发表的 :其实我是想买一个《The 　big bang theory》sheldon背的那个，美国国土安全部推荐的大急救包呵呵~对背...

怎么不算，就是这个实在是低级了一点。为啥后级不用一个LM2596，斩波的总比线性效率高，何况你都是固定电压的，之后再用LDO也不迟啊

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