英汉例句

• Partial least squares method used to be and that air drilling effluent limit formula.

  运用偏最小二乘法拟和得出空气鉆井出水限定值计算公式。

• Air has a low density and great compressibility. The volumetric flow rate of air in air drilling varies with pressure and temperature, which in turn, change with WLL depth.

  气体不仅密度低，而且具有很大的可压缩性，所以空气鉆井的体积流量将随压力和温度变化，而压力和温度又随井深变化。

• Establish the erosive wear mechanism of drilling string in air drilling and put forward that erosion wear is a substantial cause to promote drill string failure.

  初步确立了空气鉆井鉆柱沖蚀磨损机理，提出鉆屑沖蚀是促使鉆具失效的一项重要原因。

• The air drilling may largely enhance the drilling speed, shorten the drilling time, decrease the drilling cost. The technology, however, needs expensive surface equipments. A …

  空气鉆井主要应用于中低压地层，可以大幅度提高鉆井速度，缩短建井周期，降低鉆井成本，但需要昂贵的地面设备。

• The performance difference between air crew drill and mud motor was analyzed under the air drilling condition.

  对比分析了空气螺桿鉆具与泥浆马达在空气鉆井井况下的性能差异。

• In China, the screw drilling and the normal pressure compressed air drilling were conducted for trial and the results were not so good.

  国内进行了螺旋鉆进和常风压空气鉆进的尝试，但效果一般。

• These problems can be solved to use air drilling, but the use of air drilling also face restrictions created by many factors.

  采用气体鉆井技术可在一定程度上解决上述问题，但气体鉆井也受到多因素的制约。

• However, the drill-string failure in the early stage of drilling is an important factor of limiting the air drilling technology development.

  然而空气鉆井鉆具过早断裂失效问题是制约空气鉆井技术得以快速发展的一个重要因素。