Based on the layered phase grating and revolving field discrimination, a laser Doppler vibrometer system has been studied which provides a potential method of velocity measurement.

Equivalent current method different from symmetrical component method and revolving field method, is used for performance calculation on capacitor single phase motors on this paper.

The particles of the paramagnetic nanometers-iron nuclide targeting therapy system, utilizing guided by the revolving magnetic field, was studied theoretically using MATHCAD simulations.