This essay mainly discuss the ripple phase (Pβ′) of the gel P.

This paper mainly introduced its successful application of twelve-phase low ripples inverting electric power source in energy conservation improvement of Cr-electroplated generator-motor group,it was a big push on extensive job for saving energy and lowering energy consumption.

Optical pulse generated by external electro-absorption modulator (EAM) in virtue of the method of fringe-resolved second harmonic generation correlation (FRSHG) was measured.

Influence of corrugation on intrinsic frequency and critical load of arched-metal roof;

By an analysis on various causes of corrugation, the surface grinder processing and solutions are mainly presented, thus the quality of grindering is guaranteed.

The surface corrugation of Aluminium ingot affect the quality and price.

Analysis and Improving on the Ripple in Surface of Aluminium Ingot;

The ANSYS software is adopted to research a forming of an arched_type trough plate with underside ripple by using finite element method,and the model set up is in accord with actural working.

Ripples have been found at the periphery of damage site using atomforce microscope(AFM),in most cases, several set of ripples appear at the same time in the same area.