氮气循环钻井  circular nitrogen drilling

反循环钻井  counterflush drilling

空气正循环钻井  air directional drilling

天然气循环钻井  circular gas drilling

循环钻井  cycling drilling; circular drilling

钻井循环  drilling cycle

不可逆循环  irreversible cycle; nonreversible cycle; irreversible circulation

可逆循环  reversible cycle; Reversible circulation; return on investment; cycle; reversible

内可逆循环  endoreversible cycle; inner reversible cycle

逆循环  countercurrent circulation; reversal circulation; counter current circulation; reverse circulation; reverse cycle; counter revolution

逆循环除霜  reverse cycle defrost; reverse-cycle defrosting

逆循环阀  reverse circulating valve

逆循环供热  reverse cycle heating

逆循环椭圆力  backward elliptical vibrating forces

逆循环蒸发罐  reversed-circulation evaporaton

强制逆循环  backward forced-circulation

循环逆流浸出  circular countercurrent leaching

左肺逆循环  Reversal of left pulmonary Circulation

闭环循环冷却水系统  closed circulate cooling water system