Arc sound is well known as the potential and available resource for monitoring and controlling of the weld penetration status,which is very important to the wel
Coupled-plate structures are widely used in the practical engineering such as aeronautical,civil and naval engineering etc.Limited works can be found on the vib
The β-FeSi2 thin film has been applied in the research field of the solar cell,and the thickness of β-FeSi2 absorption layer was chosen through the experiment