rough drilling 中文意思是什麼

rough drilling 解釋
硬巖層中鉆進
  • rough : adj 1 粗糙的 (opp smooth); 凹凸的,崎嶇不平的 (opp level)。2 粗毛的,多毛的,蓬亂的(頭發)。...
  • drilling : n 1 鉆孔;【礦物】鉆井;〈pl 〉鉆屑,鉆粉。2 操練,訓練。n 【農業】條播。 ridge [furrow] drilling...
  1. Rough and fine cutting, drilling and boring can be conducted for petroleum drill devices such as drill collar, integral heavy wall drill pipe, centralizer as well as other large - sized and super long axis parts with diameter less than 1600mm and length less than 18000mm

    在此可以對鉆鋌、加重鉆桿、扶正器等石油鉆具和其他直徑小於1600毫米、長度小於18000毫米的大型、超長軸類零件進行粗、精車削和鉆、鏜加工。
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