机械: machine; mechanism weapon钻进: worm one's way in; drilling时间: time; hour纯机械钻进时间: net time on bottom机械钻进: bit penetration; machine holing纯钻进时间: actual bit on bottom time; actual drilling time; net drilling time; reciprocating time非钻进时间: out-of-hole time总钻进时间: gross drilling time; total frilling time钻进时间: boring time; drilling time; penetration time纯钻进时间率: net penetration time percentage钻进速度；机械钻速: rate of penetration机械钻井时间: rotating hours机械钻: power auger; power drill机械钻井: mechanical rig机械钻孔: machine drilling机械钻速: (rop) rate of penetrate; penetration rate; penetration speed; rate of penetration; rateofpenetration; （rop） rate of penetrate机械钻探: machine drilling机械钻眼: mechanized drilling步进时间: steduration; stepping time超进时间: overtime period二进时间: bit time前进时间: forward travel time潜进时间: dive dive dive into time推进时间: thrusting time行进时间: traveling time
