搜索 - 科创

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触摸屏的工作原理（简要）为了操作上的方便，人们用触摸屏来代替鼠标或键盘。工作时，我们必须首先用手指或其它物体触摸安装在显示器前端的触摸屏，然后系统根据手指触摸的图标或菜单位置来定位选择信息输入。触摸...

　　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...

[矿物化学2]钓鱼岛石莫名其妙的爱国情绪+急于求成的科研做派+恰到好处的工业垃圾=博物馆珍藏的稀有矿物作为矿物收藏者，总是要逛一下淘宝店闲鱼店，买一些心仪的矿物。大致在去年开始，淘宝和闲鱼上出现了一批...

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