单词	subtangent
释义	subtangent noun sub·​tangent ¦səb+ : the projection on the x-axis of the portion of the tangent to a curve between the x-axis and the point of tangency Word History Etymology sub- + tangent
随便看	rotunder rotundest rotunding rotundities rotundity rotundlier rotundliest rotundly rotundness rotundnesses rotundo rotunds roturier roturiers Rotylenchus Rouault Roubaix rouble roubles rouces rouches roucou roucouyenne Roucouyenne Rouen

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