| 释义 | subtangentenUK
 subtangent(sʌbˈtændʒənt) n (Mathematics) geometry a segment of the x-axis lying between the x-coordinate of the point at which a tangent is drawn to a curve and the intercept of the tangent with the axissubtangentenUK
 subtangent[¦səb′tan·jənt]  (mathematics) For a given point on a plane curve, the projection on the x axis of a rectangular coordinate system of the segment of the tangent between the point of tangency and the intersection of the tangent with the x axis. |