It also points out the adaptive condition of this tool, and tells about the role in perforating, fracture-distinguishing and cementing quality of Wells.
对仪器信号的影响因素及其测井应用进行了分析，指出了仪器的适用条件，阐述了其在射孔和裂缝识别以及固井质量评价中的作用。
In 1960, two other researchers compared quantity and quality of work of operators of cine-film perforating machines.
1960年，另外两个研究人员比较了电影胶片穿孔机操作人员的工作质量和数量。
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