搜索 - 科创

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语音和短信可以走asterisk/freepbx/linphone组成的语音交换网，linphone客户端可以连接自己用asterisk live cd开的服务器。http://item.taobao...

我感觉压敏电阻可以去掉，那个貌似是用来吸收尖峰的，低压下可以不用装，而且也没见用压敏电阻来吸收尖峰的，一般用RC缓冲网络；4429是MOSFET驱动器，TC4429 MIC4429是一样的东西，只是厂...

关于真空浇铸与常压压铸的比较，ehco做的真空浇注RAP在实验中也发生过多次不明原因的爆炸，后来怀疑两个原因：1，固化剂与AP反应生成易爆盐类。2，真空浇注后固化温度过高产生气泡。后来，乖老汉又搞出一...

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