研究表明，水对岩石力学特性的影响主要与岩石的硬石膏含量和岩芯采取率有关。
The results show that the effect of water to rock mechanics characteristic has something to do with anhydrite's content and core extraction rate.
试验表明，该技术方法具有岩芯（样）采取率高、钻进速度快的特点。
The experiment shows the technique possessing high core recovery rate and quick drilling speed.
试验表明，该技术方法具有岩芯（样）采取率高、钻进速度快的特点。
The experiment shows the technique possessing high core recovery rate and quick…
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