搜索 - 科创

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本帖最后由 samhrc 于 2013-12-22 12:20 编辑钢轨型材啊～可以参考下古典车床的造型。两根钢轨做床身纵向导轨。正好钢轨踏面磨平铲刮当导轨面，钢轨下沿铣出燕尾，用一根燕尾一根...

caesar_king 发表于 2014-1-27 17:09 怎么可能啦我自己设计打样的。你看走线就知道了。就怪我忘记在PCB上打我的名字了= =现在设计的所有PCB上 ...[s:12]也怪我 ...

samhrc 发表于 2013-11-7 18:52 三相交流变压器每一根线对中性线都是220V，两根线之间相位差为120度。你画一个图来就清楚了，从一点也就是 ...我这是三角形你说的是星形三角...

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