本发明公开了一种异或门鉴相器,通常与数字模块构成一个环路使用,包括四输入电流模逻辑异或门鉴相器和流水线比较器,流水线比较器包括第一电阻分压网络,第二电阻分压网络及多个比较器.四输入电流模逻辑异或门鉴相器,通过两个输出电压的升高和下降来表示输入信号之间的相位差,不仅鉴相速度快,而且鉴相分辨率是传统异或...
SOLUTION: In the sensor IC where pluralities of photodetectors 1 providing an output of a signal in response to a light receiving amount on chip substrates formed rectangular as plane view, a plurality of the photodetectors 1 are arranged on the chip substrates as columns in the main scanning ...
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2010年11月,为配合西安至商洛段高速公路建设,陕西省考古研究院对老牛坡遗址路段发现的夏商文化遗址进行了考古发掘.本次共发掘商代墓葬22座,以长方形竖穴土坑墓为主,整体保存情况较差,随葬器物主要有鬲,豆,罐,缸等.随葬陶器具有较浓的地方文化因素,为研究陕西商代考古学文化及与周边同期文化的交流提供了重要资料.关键...
1401585 Chewable smoking substitute LEO AB 15 Nov 1973 [16 Nov 1972] 53081/73 Heading A2B A chewable smoking substitute composition comprises 15-80 wt% of a gum base, nicotine, and sufficient of a solid physiologically acceptable .water-soluble buffering agent dispersed in the composition to rais...