Algebraic Turbulent Heat Flux Model for Prediction of Thermal Stratification in Piping Systems

Dynamic Testing and Fault Diagnosis of CNC Based on the Method of Cepstrum Identification

“…The difference is vibration amplitude, and some vibration can affect the normal work of the structure [1]. From fig.1 we can see that a product before produces larger vibration, has a long working time, but once there is obvious vibration accompanied by a certain noise, its life will decline sharply [2][3].…”