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

That's the equation of a tangent plane.
这就是切平面的方程。
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。
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。
Let's think about the tangent plane with regard to a function f.
我们来考虑，关于函数f的一个切平面。
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。
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 tangent is an important concept in trigonometry.
“正切”是三角学中的一个重要概念。
We are replacing the graph by its tangent plane.
我们用函数的切平面来替代它的图像。
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。
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。