1954 年的矿石收音机,Medium, Long Wave and Short Wave designs. 12 different circuits to suit all areas and conditions. Last published in 1964. The Boys Book Of Crystal Sets 预览: 来源:矿石收音机论坛 - 1954 年的矿石收音…
如题,一篇关于电机建模的文章(1928 年),文章标题:Definition of an Ideal Synchronous Machine and Formula for the Armature Flux Linkages。 文章价值:将坐标变换应用到电机建模中,简化建模并反映本质。Park, R.H. "Definition of an ideal…