“formation resistivity”可以造什么句，formation resistivity造句
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2、Cased hole formation resistivity (CHFR) logging tool is a new-type instrument which is developed to measure and evaluate formation remaining oil saturation in casing hole of oilfields.
1、In step invasion formation, when the ratio of invasion resistivity to formation resistivity is less than 0.
3、As far as cased-hole formation resistivity logging, the key problems needed to be solved are detection of ultra-low frequency and extremely weak signals, as well as reduction of strong interferences.
