tangent

英 [ˈtændʒənt]

美 [ˈtændʒənt]

n.  切线; 正切

复数：tangents　

TEM8

BNC.21952 / COCA.24421

习惯用语

n.

fly/go off at a tangent
• 突然转换话题；突然改变行动
  to suddenly start saying or doing sth that does not seem to be connected to what has gone before

牛津词典

noun

• 切线
  a straight line that touches the outside of a curve but does not cross it
• 正切
  the ratio of the length of the side opposite an angle in a right-angled triangle to the length of the side next to it

柯林斯词典

• 切线
  Atangentis a line that touches the edge of a curve or circle at one point, but does not cross it.
• PHRASE 突然偏离原来的思路;突然离题
  If someonegoes off at a tangent, they start saying or doing something that is not directly connected with what they were saying or doing before.
  1. The conversation went off at a tangent.
     交谈突然偏离了正题。

英英释义

noun

• ratio of the opposite to the adjacent side of a right-angled triangle
  Synonym:tan
• a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point

双语例句

• Describes the tangent when approaching this point from the previous point in the curve.
  在曲线上从上一个点接近这个点时描述切线。
• That is how we get the tangent plane.
  这样我们就得到了切平面。
• Finally, we illustrate the effects of using the tension parameter and tangent vectors to generate subdivision curves.
  最后给出一些实例来说明松弛参数和切向量对细分曲线的影响。
• Accurate reconstruction of planar contour mixed with straight lines and arcs is achieved with position or tangent continuity.
  解决了由直线和圆弧构成的平面轮廓精确重构问题，满足轮廓各段之间位置连续以及相切条件。
• These two curves are tangent.
  这两个弧相切。
• The atanh() function returns the inverse hyperbolic tangent of an angle.
  函数的作用是：返回一个指定角度参数所对应的反双曲正切值。
• A new spline curve is presented which interpolates given points and tangent directions with piecewise involute of circle.
  利用拼接的圆渐开线实现对平面上的数据点及其切向的插值。
• But, actually, that is not true because here the circle is tangent to the axis.
  但实际上，这是不对的，因为这个圆与这个坐标轴相切。
• Drag to add 2 circles with tangent connecting opposite sides. Complementary tangent line can be shown.
  拖动此形状，可添加切线与相对圆边相连的两个圆。可以显示互补的切线。
• Drag to add two arcs with adjustable radii and connecting tangent lines.
  拖动此形状，可添加具有可调半径和相连切线的两条弧线。