refine on [upon] one's theory
She will refine on her Bad points.
Modern medical techniques refine on those of the pass.
After30 years, the mature author was able to refine on the work of his youth.
An optimization of stepping motor subdividing controller is useful and important to enhance subdivision accuracy and to refine on subdivision error.
Odd bakelite plastic electrical appliance factory was founded in 1988, at the beginning, namely to "refine on, service first" business philosophy.
