搜索 - 科创

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献给：我的父母，我的老师，化学吧的同学们以及任何曾经帮助和支持过我的人！原文标题：Preparation & Decomposition of Diazonium fluoroborate 4本文已...

之前发过一个使用USB声卡芯片来采集信号的SDR，但是控制频率只能手动旋转编码器，而且这样在软件上读频率很麻烦。当时考虑使用声卡芯片本身的IO口来控制频率。但是厂商给的资料很少，不好实现。前段...

本文是转载的，写于谷歌退出中国之前。前言在夏天去西藏之前，我曾仔细查询了前往西藏的路线、海拔等等资料。由于那些地方的地图稀缺，很多时候我不得不记录下关键路口、山口等地的经纬坐标。从 Google...

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