A、粗車(chē)—半精車(chē)—精車(chē) B、粗車(chē)—半精車(chē)—精車(chē)—金剛石車(chē) C、粗車(chē)—半精車(chē)—粗磨—精磨 D、粗車(chē)—半精車(chē)—粗磨—精磨—研磨