хүрэн нүүрсний хэт нарийн тээрэм
бөмбөг тээрэм pinion болон pinion босоо амны· нүүрсний шингэрүүлэл As Alex told you The crushing work index you calculated appears mostly correct. The only correction factor that might affect the calculation is to correct for the efficiency of the motor -- the work index is based on motor output ...