THE LANDSCAPE AND LEVEL OF ALCOHOL POLICY ENFORCEMENT IN TANZANIA.


Prediction Method of Concentricity and Perpendicularity of Aero Engine Multistage Rotors Based on PSO-BP Neural Network

This paper proposes Shoes a method for predicting concentricity and perpendicularity based on PSO-BP neural network in order to solve the problem of low accuracy for aero engine multistage rotors assembly.The influence factors of error propagation in the assembly are analyzed based on the characteristics of rotor structure and assembly process.And

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