We can analyse and diagnose bit working state based on integrated logging data. The main characteristic parameters for bit wearing degree are torque and drilling time.

钻头的工作情况可以根据综合录井资料分析判断，反映钻头磨损程度的主要特征参数有扭矩和钻时。

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The experimental and data collection system for the research on the working principle and energy cost characteristic of the DVM system in summer is established.

本文建立了数码涡旋多联式空调系统夏季运行状况和能耗特性的实验测试和数据采集系统。

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Based on the data, this study studies the cutting force affected by the characteristic parameter of PDC cutters, the mechanics property parameter of rocks, the working parameter of PDC bit.

PD C齿切削载荷的分析，以实验测试的数据为基本依据，对钻头布齿结构参数、切削齿特性参数、岩石的力学性质、钻头的工作参数等因素对PDC齿切削力的影响规律做了全面、系统的研究。

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