zero curvature零: zero zero sign; nought曲率: curvature; buckling; curvity零曲度: zero camber曲率: [数学] curvature; buckling; curvity◇曲率计 curvimeter; flexometer; 曲率角 angle of curvaturericci曲率: ricci curvature下载手机词典可随时随地查词查翻译