1.0planet forward//www.getitdoneaz.comdale bowen//www.getitdoneaz.com/author/dalebowen/saay goodbye to the electric co. - planet forward - 克罗地亚vs加拿大让球
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electric motor technology has been around for 100 plus years…not much has changed and it seems to be a technology frozen in time. about the only new technology that has emerged has been the brushless dc servo motor. the brushless dc motor is basically the same old synchronous ac motor with a feedback device mounted...