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望远镜为什么看得远?
广义上的望远镜不仅仅包括工作在可见光波段的光学望远镜,还包括射电,红外,紫外,X射线,甚至利洋音...
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PD个停似余响和述帮P优点的介绍
等离子显示技术证来自明比传统的显像管和LCD液晶显示屏360问答具有更高的技术优势,沙点会胡式置...
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PDP的优点
等离子360问答显示技术证明比传统的显像管和L观知伯每非虽间CD液晶显示屏具有更高的技术优势,表...
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各种监来自视器名称与用途
监视器作为视频监控不可缺的终端设备,充当着监控品人员的“眼睛”,同时也为事后调查起到关键性作用。...
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运动物体在静止背景下留下的残影使物体的边界变得模糊
监视器作为视频监控不可缺的终端设备,充当着监控人员的“眼睛”,同时也为事后调查起到关键性作用。来...
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可靠性监阶视器的作用
监视器作为视频监控不可缺的终端设备,充当着监控人员的“眼睛”,同时也为事后调查起到关键性作用。监...
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如果将一枚棒球以90%光速的速度投掷出去,挥棒击球时会发生什么呢?
让我们先把怎么能让棒球飞到如此高速度的问题摆在一边。不妨假设投球队员只是****普通的投球动作,...
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0.9倍来自光速的棒球丢出去,会发生什么?
问题的答案是——“很多事”,所有事件都将在极短时间内发生,而且对击球者(当然投球者也一样)来说,...
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客厅宽度3.7m,买多少寸的电视合适?
一句话:预算之内越大越好,55寸起步!屏幕大就是看着爽来自,临场感就是强,太多人电视买回家越看越...
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****时来自期有x光机吗
发明者1895年,德国物理学家威尔姆·康拉德·伦琴发现的X光导致医生使用的新诊断工当独展积罪研转...
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安检输送带的传送带的工作原负改简岁衣及反理
火车站进口安检仪工作来自原理坐车过程中,相信无论是乘坐汽车或是火车回家的都有这样的经历:每次进站...
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安检输送带的传来自送带的工作原理
火银背学孩美干起者车站进口安检仪工作原理坐车过程中,相信无论是乘坐汽车或是火车回家的都有这样的经...
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嫦娥二号飞行多长时间?任务是什么?有多大?有多高?
一是获取更高精度月球表面三维影像,分辨率由嫦富稳电画难势娥一号卫星的120米提高至优于10米二是...
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