This paper mainly introduces superimposing correlation techniques of logs from new and old well.

本文主要利用新老井测井曲线叠合对比法对测井曲线进行校正。

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Three computational methods for compressing the features by correlation techniques and the appropriate simplified calculating formulae are given and compared.

本文给出了用相关方法压缩特征的三种具体计算方法及有关计算的简化公式，并对三种方法进行了比较。

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However, photoacoustic techniques can hardly provide in-situ measurement and gas filter correlation techniques are of less sensitivity.

但常用的光声仪器的现场性、实时性较差，一般红外吸收法又不如前者灵敏。

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So when trying to decide whether fluctuations in the quantity of neutrinos are related to anything else, statistical techniques have to be used to rule out the possibility that any observed correlation is a fluke.

ECONOMIST: Particle physics