搜索 - 科创

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PPR热水管子内径4厘米，管壁厚1厘米长度35厘米，电极碳棒做的喷口，用彩板钉固定，一圈八根钉并用《粘的劳》胶固定，还有云母纸密封。堵头环氧树脂胶加9根彩板钉固定。燃料棒是2段也用云母纸包裹，打算做个...

硝酸是六大无机强酸之一，实验室常用酸，但也同样是管制品，个人一般没有简易的途径获得，对于实验党来说制硝酸的方法也就成了基本技能。 1905年，挪威出现了电弧法生产硝酸的工厂，这是历史上最...

之前发了一个制作便携sdr的帖子，使用stm32f4实现了一下。之后虎哥建议用h7实现。现在就正在搞h7加msi001的方案。万万没想到，俄罗斯有哥们已经把这个方案实现了。大家可以去参观一下http:...

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