在设计投影电视新的光学系统所涉及的屏幕参数时,采用近轴近似弧度算法可定量计算屏幕参数.......

游戏型手机完全不是梦想，市面上有那么几款手机就是专门为游戏夺身定制，不妨让我们来看个究竟。......

A series of laboratory screening tests have been performed with the objective of evaluating the effect of feed rate, scr......

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