1590s, "meeting at a point without intersecting," from Latin tangentem (nominative tangens), present participle of tangere "to touch," from PIE root *tag- "to touch, to handle; border on; taste, partake of; strike, hit;" figuratively "affect, impress; trick, cheat; mention, speak of" (cognates: Latin tactus "touch;" Greek tassein "to arrange," tetagon "having seized;" Old English þaccian "stroke, strike gently"). First used by Danish mathematician Thomas Fincke in "Geomietria Rotundi" (1583). Extended sense of "slightly connected with a subject" is first recorded 1825. Related: Tangence; tangency.
tangent (n.)
1590s as a geometric function, from tangent (adj.). From 1650s as "a tangent line." Figurative use of off on a tangent is from 1771.
tangent 英文释义
1. a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point
2. ratio of the opposite to the adjacent side of a right-angled triangle
tangent 双语例句
1. The conversation went off at a tangent.
交谈突然偏离了正题。
来自柯林斯例句
2. The graph of a concave function is always below its tangent.
一个凹函数的图象总在它的切线的下方.
来自辞典例句
3. The tangent may be used to find the direction.
这方向也可用正切求得.
来自辞典例句
4. 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.
来自辞典例句
5. It's not easy to follow her thought because she's always going off at a tangent.
要跟上她的思路并非易事,因为她老是突然扯到题外去.
来自辞典例句
tangent 实用场景例句
The conversation went off at a tangent.
交谈突然偏离了正题。
柯林斯高阶英语词典
Construct an animation showing the tangent sweeping out the interior of astroid.
建构一动态绘图:展示星状线的切线所有扫掠过的内部轨迹.
期刊摘选
Compressing air expands in nozzle, and then enters into vortex tube in the tangent line direction.
工作时压缩气体在喷嘴内膨胀, 然后以很高的速度沿切线方向进入涡流管.
期刊摘选
Now stick to the point. Let's not fly off at a tangent as we did last week.
请紧扣要点,不要像上星期那样扯到题外.
期刊摘选
Does the Cross Member remain tangent to the Vertical Member?
水平交叉部分是否和垂直部分保持相切?
期刊摘选
The troughs of stator were radial. The troughs of rotor were tangent of basis circle.
这种均质机的主要特点是定子槽道沿着径向开设,转子槽道沿着基圆的切向开设.
期刊摘选
Aspline 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.
期刊摘选
Two inequalities related to tangent function are proved in this paper.
证明了与正切函数相关的两个不等式.
期刊摘选
Parallax mapping uses the concept of tangent space in the same manner.
视差贴图同样使用了这样的切线空间的概念.
期刊摘选
An application programmer must supply a tangent, binormal, and normal at each vertex.
程序员必须提供每个顶点的切线 、 副法线和法线.
期刊摘选
It's not easy to follow her thought because she's always going off at a tangent.
要跟上她的思路并非易事,因为她老是突然扯到题外去.
辞典例句
Figures 16 . Test rendering of tangent normal on the same but skinned model.
图十六在已经蒙皮的模型上作同样的正切法向线效果算图测试.
期刊摘选
Expression to compute the arc tangent of ( float ).
要计算反正切的表达式 ( 浮点小数型 ).
期刊摘选
Tangent did not see tumor investigations were to cheek ( on sticks ) and neck incision line.
切线均未查见肿瘤,分别向颊部 ( 沿皮纹 ) 及颈部行切开.
期刊摘选
The graph of a concave function is always below its tangent.
一个凹函数的图象总在它的切线的下方.
辞典例句
Base circle : a circle tangent to the line of action ( or pressure line ).
基圆---与作用线 ( 或压力作用线 ) 相切的圆.
期刊摘选
Described an algorithm for constructing trigonometric spline curve, which was tangent to the given polygon.
描述了一种与给定多边形相切的三角样条曲线的算法.
期刊摘选
Dielectric loss tangent ( tan σ ) is the most important parameter that reflects the apparatus'insulation condition.
介质损耗因数 ( tanσ ) 是反映设备绝缘状况的重要参数.
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Given a triangle, construct the deltoid tangent to its sides.
给定三角形, 作三角线与其三边相切.
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Another is to intenerate the input vectors by hyperbola tangent function.
二是采用双曲线正切函数柔化输入矢量.
期刊摘选
The slope of a line tangent to the curve at the point is the marginal function.
需求曲线在这一点上切线的斜率也就是该点的边际函数.
期刊摘选
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.
期刊摘选
Tangential Orientated at a tangent circlecircle being , for example , the surface of a plant stem.
属于、关于一个切线或切(面),沿着或向着一个切线(或切面)的方向移动.
期刊摘选
We put forward in this article the method of applying common tangent circle drawing to ellipses.
提出应用公切圆法画椭圆,可不必推平行线和多次加长圆规,只需用直线尺作图,且理论上误差为零.
期刊摘选
Computes the arc tangent ( in radians ) of the specified argument.
