光电效应是光电吸收截面指数（PEF）测井的测量原理，PEF测井用来划分岩性。

The photoelectric effect is the principle behind the PEF log, which identifies lithology.

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光电效应是光电吸收截面指数（PEF）测井的测量原理，PEF测井用来划分岩性。

The photoelectric effect is the principle behind the PEF log, which identifies lithology.

youdao