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Wearisthemaincauseofthefailureofmechanicalequipment.Becauseofthewear,heavylosesarecausedeveryyear.Therefore,itisofvitalimport...
Wearisthemaincauseofthefailureofmechanicalequipment. Becauseofthewear, heavylosesarecausedeveryyear. Thus, itisofvitalimport ...