The forced resonance mechanism is one of many reasons of power system low frequency osillation.

According to the resonance mechanism, power disturbance of prime mover can arouse power system forced low frequency oscillations.

This paper concentrates on the research of power system low frequency oscillations on resonance mechanism, while how different forms of disturbances affect the oscillation characteristics and the possible sources in governing system which may evoke the oscillation are comprehensively studied and simulated.

Microstructure and cross blend mechanism of nanometer ZnO/SBS modified asphalt;

Cross blend mechanism of SBS modified asphalt based on infrared spectra;

Based on investigation of swamp and permafrost in the Da-Xiao Hinggan Mountains, Northeast China, comparative observation and systematic analysis, this paper reveals the symbiotic mechanisms of swamp and permafrost.