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

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。
If we were moving on the tangent plane, this would be an actual equality.
如果我们在切平面上移动，这将会是一个真正的等式。
This paper discusses cubic algebraic curves with the given tangent polygon.
文章论述了与给定切线多边形相切的三次代数曲线；
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。
For? 0 we naturally get a circle; for? 0 we obtain two tangent circles.
对？0我们当然得到一个圆；对？0得到两个相切的圆。
The plane that contains all the lines tangent to a specific point on a surface.
包含所有在表面上的一个特殊的点相切的线的平面。
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。
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。
The tangent is an important concept in trigonometry.
“正切”是三角学中的一个重要概念。
And, that's the same thing& as being tangent to the level.
这就和“与等值面相切”说的一样了。