单词	Ricci equations
释义	Ricci equations 里西方程
随便看	principal centers of curvature principal centre of curvature principal chain principal chain-homotopy principal challenge principal channel principal component regression method Principal component regression model Principal Component Regressive Analysis principal character principal character extraction principal characteristic Principal characteristics principal charge principal charterer principal chemical components principal chord principal circle principal circuit principal city principal civil legal act principal claim principal clause principal climatic factors principal climatological station