给出了3种钻具组合形式，分析了井下导向技术的优势，探讨了携岩等技术问题并推荐了解决办法。
The paper presented 3 kinds of bottom hole assembly, analysed the advantages of downhole steering technique, discussed the problems such as rock carrying and recommended some solutions.
向顾客空间应用维度降低技术，能有效地把相似顾客组合为群组，正如我们现在所说的，这样的聚类也会降低推荐的品质。
Dimensionality reduction applied to the customer space effectively groups similar customers into clusters; as we now describe, such clustering can also degrade recommendation quality.
向顾客空间应用维度降低技术，能有效地把相似顾客组合为群组，正如我们现在所说的，这样的聚类也会降低推荐的品质。
Dimensionality reduction applied to the customer space effectively groups similar customers into clusters; as we now describe, such clustering can also degrade recommendation quality.
应用推荐