博山電機認(ren)準:淄博(bo)(bo)博(bo)(bo)山電(dian)機(ji)(ji)廠提供直(zhi)流電(dian)速電(dian)機(ji)(ji)、行(xing)星(xing)減速電(dian)機(ji)(ji)的選型(xing)指導、原理參(can)數介(jie)紹、型(xing)號齊全(quan),價(jia)格公道