tangent

英 [ˈtændʒənt]

美 [ˈtændʒənt]

n. 切线; 正切

复数：tangents　

BNC.21952 / COCA.24421

习惯用语

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

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

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。

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

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。
The tangent is an important concept in trigonometry.
“正切”是三角学中的一个重要概念。
So, the velocity vector is going to be always tangent to the curve.
速度向量总是与曲线相切的。
Being perpendicular to the surface means that you are perpendicular to its tangent plane.
垂直于曲面也意味着垂直于它的切平面，垂直于曲面也意味着垂直于它的切平面。
That's one way to define the tangent plane.
这是定义切平面的方法。
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。
The steady automatic tangent line function has improved working efficiency.
稳定的自动切线功能提高了工作效率。
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。
That's the equation of a tangent plane.
这就是切平面的方程。