搜索 - 科创

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土法制造亚铁氰化铁狄斯巴赫将草木灰和牛血混合在一起进行焙烧，再用水浸取焙烧后的物质，过滤掉不溶解的物质以后，得到清亮的溶液，把溶液蒸浓以后，便析出一种黄色的晶体。当狄斯巴赫将这种黄色晶体放进氯化铁的溶...

目前B卷考试已经不再作为科创发言的必要条件了。因此我在此出一个习题解析，不想被剧透的话就先去做题考试：https://www.kechuang.org/exam该系列只解析我擅长的专业题目，过于简单的...

引用 kcltxinshou:还有问题： 1、如果所有VCC均为18V，那么风扇选用什么样的规格呢？ 2、LM339的电源电压为18V，输出信号电平应该也是18V，加在S8050、S8550图腾的基极...

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