查询词典 tangent line

According to the inner or outer tolerance the algorithms for maximizing the forward-step by maintaining a constant tolerance are provided by the chord line or tangent line respectively.

建立了复杂曲面球头铣刀三坐标数控加工刀位计算模型，根据正负允差的不同要求，分别给出了弦线法和切线法自适应步长的刀位点生成算法。

Part four will prove the following 4 theorems : theorem 1 :the curvature and torsion of the locus of foot point of the perpendicular line between the origin and the tangent line of the cylindrical spiral remains to be function t , but not trigonometric function t .

第四部分证明四个定理分别为定理1 由坐标系原点至圆柱螺线的切线所引垂线的垂足的轨迹曲率和挠率仍为t的函数，但不是t的三角函数。

The first proposes that any differentiable function defined on an interval has a mean value, at which a tangent line is parallel to the line connecting the endpoints of the function's graph on that interval.

第一个定理指出，定义在一个区间上的任何可微分的函数都有一个平均值，在该点的切线与该区间上函数曲线两端的联机平行。

A straight line that passes through the exterior end point of a radius and is perpendicular to the radius is a tangent line of the circle.

经过半径的外端且垂直于这条半径的直线是圆的切线。

In the first part of the paper, we construct a family of 1 parameter cubic algebraic curves interpolating four given points and two tangent lines at the endpoints, and one can manipulate the shape of cubic algebraic curves by controlling the points or the tangent line directly.

该文提出的代数曲线的结构有两种，一种是插值平面上四点及两端点切线的三次代数曲线；另一种是插值两端点、两切线及两曲率的三次代数曲线。

Theorem 2: the locus of foot point of the perpendicular line of between the origin and the tangent line of the cylindrical spiral is on the simple leaf camber hyperboloid of one sheet .

定理2 由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹在单叶双曲面上。

Theorem 4 it is not the path of integral but the points and in the locus L that affects the line integral of locus L of foot point of the perpendicular line between the origin and the tangent line of the cylindrical spiral .several corollaries are derived from the theorems mentioned above.

定理4 势量场沿由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹L的线积分与积分路径无关，只与轨迹L上的取的端点与有关。并由以上定理得到了几个推论。

By the aid of a example, the parameters were solved with the tangent line of a circle, the intersection point of tangent and thecoordinates defined by the geometrical relationship of the image based on two propositions proposed in the paper.

借助实例，在文中建立的2个命题的基础上，通过对圆的切线、切线交点及所成像的几何关系确定的的坐标进行参数求解，得到确定模型的二维像和三维像。

Pressure line and the tangent line of two types of support.

切线 有压力线和支撑线两类。

Everyone was required to lake a full-length standing X-ray film of the lower extremity. The hip-knee-ankle angle, femorotibial angle and tibial plateau-tibial shaft angle were measured on their anteroposterior radiographs. while the posterior slope of tibial plateau was measured on their lateral radiographs based on three reference lines: anterior tibial cortex tangent line, tibial proximal anatomical ink acid posterior tibial cortex tangent line.

受试者拍摄下肢站立位全长X线片，并按要求测量髋－膝－踝角、胫股角和胫骨平台内翻角，再分别用胫骨中上段前侧骨皮质切线、胫骨中上段轴线和胫骨中上段后侧骨皮质切线作为参考线测量胫骨平台后倾角。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了