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1·Real exam ples prove the necessity of gamma spectrometry log.

文中通过实例强调了伽马能谱测井的必要性。

2·The paper described the structure principle, application charaCteristics as well as advantages and defects of various kinds of oil treatment equipments and illustrated with exam ples.

本文阐述了各类绝缘油处理设备的结构原理、应用特征及优缺点，并举实例说明。