搜索 - 科创

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国际单位制。现在有了更简单的分析方法：自制燃料的a和n无法测定，因此我们简化 P=func(Ac/At), F=Cf*P*AtP燃烧室压力，F推力，Cf推力系数，Ac燃烧面积，At喷管喉部面积Cf的范...

额，我用的是pc，不是pvc.下面是ai给的"PC管和PVC管是两种常见的塑料管材，它们各自具有不同的特点和应用领域：1. 材质：PC管是由聚碳酸酯（Polycarbonate）制成的，它是一种无色透...

额，原理图没画，我用的是LAYOUT50程序写的太乱了，我就送上几个重要的模块吧。11.0592M晶振和12M晶振通用。//@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@...

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