I tenei ra ka mohio koe ki nga take o te nui o te paraihe motika dc motihiko me te tikanga tukatuka. 1. Te take: ehara te paraihe i te raina kupapa. Tikanga Tukatuka: whakatikahia te tuunga rakau paraihe, tuku paraihe ki te raina kore. 2. He take kino: te pehanga paraihe, te kaikawe whakapiri ngoikore ranei. Tikanga: whakatikahia te pehanga paraihe, kia whakawhitia ki te waahi e tika ana, whakakapi ranei i te mata commutator. 3. Ko te take: kaore i te maeneene te mata commutator. Tikanga: te hurihanga mata commutator. 4. Te take: he nui rawa te taumaha o te motuka, te ngaohiko tuku ranei. Tikanga: ki te whakaiti i te kawenga motika me te ngaohiko hiko. 5. Take: rotor dynamic balanced without correction. Tikanga Tukatuka: mo te whakatikatika i te pauna hihiko rotor. Koinei nga take o te nui o te paraihe hiko dc motini mana whakahaere me te tikanga tukatuka, me tumanako koe ki te awhina i a koe ki te whakamahi i te motuka motuka dc.
Ko te roopu HOPRIO he kaihanga ngaio o te kaiwhakahaere me nga motuka, i whakapumautia i te 2000. Te tari matua o te roopu i Changzhou City, Jiangsu Province.