tangent

英 [ˈtændʒənt]

美 [ˈtændʒənt]

n. 切线; 正切

复数：tangents　

TEM8

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

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

The conversation went off at a tangent.
交谈突然偏离了正题。
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。
The line connecting the point and the center bisects the included angle of the two tangent lines.
这一点和圆心的连线平分这两条切线的夹角。
The first two order radial and tangent displacement modes of pipe are acquired.
对管道进行数值模拟，提取前两阶径向和切向位移模态。
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。
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。
Then, if I choose any vector in that tangent plane.
那么如果我选择了任何位于切平面的向量。
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。
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。
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。