搜索 - 科创

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引用第26楼虎哥于2009-02-04 21:14发表的 :在曾今于贵州当知青的朋友家中见到过整块的自然金，外观像自然硫，密度奇大，一块就有一两斤重。据说是当时（70年代）救了一个村民的命，村民要表...

嗯~我同意LS观点。虽然这个星球上费钱的工程很多，但大部分都是水利交通工程，这类工程具有十分显著的社会效益和经济效益。一经投入使用可以获得巨大的利益回报。而把沙漠改造成良田或森林却并不会在短期内有什么...

KC里面的HAM不少的。。。我知道的就不下十个。。。欢迎加入HAM IN KC QQ群我这可是响应论坛号召！！！群号：328041350

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