1·It wou1d be better to reverse circulation in this case.
在这种情况下，用反循环会好些。
2·The paper introduces the typical examples for resolving these problems by air-lift reverse circulation drilling technology.
介绍了应用气举反循环钻进工艺解决这些疑难技术问题的成功案例。
3·Also a CBA local air reverse circulation tool is designed with the required air pressure and consumption calculation formula given.
本文特别研究设计了CBA型局部气举反循环钻具，对钻进所需的空气压力和压气量给出了计算公式。
4·While adopt the reverse circulation perfusion stake craftwork, can solve this problem, and this craftwork has been popularized broadly.
通过采取反循环成桩工艺，可很好地解决这些问题，目前该工艺得到了广泛的推广。
5·Water well drillers may specialize in a specific method of drilling, such as cable, rotary, auger, hammer or reverse circulation drilling.
水井钻井工可能会专注于一个特定的钻探方法，如电缆，旋转，钻，锤或反向循环钻探。
6·According to the exploration problems in an open-pit mine, a new drilling method using reverse circulation DTH hammer drill is put forward.
针对露天矿钻探施工中存在的问题，提出了利用贯通式反循环潜孔锤进行施工的新方法。
7·Rig GFC-120 is a kind of self moving reverse circulation rotary rigs. It is mainly used to drill side foundation holes and small water wells.
GFC-120型钻机为自走式动力头回转反循环钻机，用于降水井和护坡桩基础孔以及小型水井的施工。
8·The driller adopts the percussion and reverse circulation drilling pattern, with the higher drilling efficiency and wider formation suitability.
钻机采用了冲击反循环方式，钻进效率高，适应地层面广。
9·The procreative blanking plug of the "Y type" pipe string has check valve function and it can conveniently for reverse circulation well cleanup.
型管柱中的生产堵塞器具有单流阀作用，可方便进行反循环洗井；
10·In addition, the effect of the reverse circulation in a bayonet tube type waste heat boiler on the safe operation of the apparatus is also discussed.
此外，本文还从工质流动特性上讨论了刺刀管式废热锅炉发生逆循环对于设备安全运行的影响。