请英文高手看看下面的这句英文有没用语法和时态错误.只是没用财富值了.Inthispaper,thesampleautocovariancefunctionoftheloggingdataoftheoil-layer,gas-layer,water-layeranddry-layerareestimated,andbedistingui

Question

请英文高手看看下面的这句英文有没用语法和时态错误.只是没用财富值了.
In this paper,the sample autocovariance function of the logging data of the oil-layer,gas-layer,water-layer and dry-layer are estimated,and be distinguished by discriminant analysis to identify the reservoir fluid.

Answer 1

相信是做为主题的开场白、开段解释之用.可以把“be” 去掉,因为都是被动式,跟随着“estimated" 一起运用.所以可以这样写：
" .are estimated and distinguished by.“ 我只是把前后省去,意思你该明白.