查询词典 tangent

In the study of the relation of the tangent and the tangent point of conics,this paper will introduce a solution to the problem in seeking the tangent and the tangent point of conics,with mapping the tangent into tangent point or mapping the tangent point into tangent using mapping correspondence.

为了研究二次曲线的切线与其切点的关系，借助对射对应将切点映射成切线或将切线映射为切点，解决求二次曲线的切线和切点的问

This paper develops methods for tangent direction continuous (G1) and both tangent direction and curvature continuous (G2) interpolation of a range of points on surface with specified tangent and either a curvature vector or a geodesic curvature at every point.

给出了数据点的切方向(切方向及曲率向量或测地曲率值)指定而G1连续(G2连续)插值曲面上任意点列的方法。

Test and analysis show that, the distribution patterns of the tangent veloctiy fields in the big cone area and the small cone area, which are comprised of para-free vortex and para-forced vortex, are basically identical without a change of the radius of the boundary surface; with the increase of the angle of the small cone, the para-free vortex area decreases and the para-forced vortex area increases, and the emulsifiability of the fluid drips increases with the increase of velocity gradient; the tangent velocity increases with the increase of inlet flow, and the maximum tangent velocities of both the big cone area and the small cone area are 4.94 times of the inlet flow; and the maximum tangent velocity increases with the increase of the split ratio and with the radius of the boundary surface not changed.

试验分析表明，大锥段和小锥段切向速度分布规律基本相同，均由准自由涡和准强制涡构成，分界面半径rm没有变化；随着小锥角θ的增加，准自由涡区缩小，准强制涡区扩大，速度梯度增加会加大液滴的乳化程度；随入口流量增加，切向速度增大，经拟合得出大锥段和小锥段的最大切向速度均为入口流量的4.94倍；分流比加大，分界面半径基本不变，最大切向速度增加。

The invention refers to a method to correct universal frequency of electric communication technique, its character: make signal index quantization on the complex number of cross product, to directly reflect the quantized numerical value of tangent value and the located quadrant of imaginary and real parts, use inverse tangent ROM table to discriminate the processed result, then make loop filter and phase accumulation on the discriminated result to obtain error-correcting angle, and use digital controlled oscillator to make table look-up and quadrant adjustment to obtain correcting factor; use the relationship of trigonometric function in each quadrant to compress inverse tangent look-up table ROM and digital controlled oscillator look-up table ROM.

一种涉及电通信技术的通用频率纠正的方法，其特征在于：它采用如下步骤：经过叉积的复数进行信号指数量化处理，通过该复数虚、实部信号的指数量化结果的差值及其极性直接反映虚、实部的正切值的量化数值以及所处象限，将处理后的结果通过反正切ROM表进行鉴频，鉴频后的结果经环路滤波和相位累加，得纠偏角度，通过数控振荡器针对纠偏角度进行查表和象限调整，得到纠正因子；通过个象限之间的三角函数关系来压缩反正切查表ROM和数控振荡器查表ROM的大小，本发明资源耗费小，效率高，可极大地节省内存资源。

In addition, after comparing the time difference between the precursor and the main PKKPbc phase at different outer core conversion point positions, we find the seismic evidence for the tangent cylinder structure in the outer core.

4通过对PKKPbc波形及其前驱波的分析，得到了外核顶部轻元素组成的刚性薄层的地震学性质：我们还通过比较不同位置的前驱波到时的差异，提出了外核可能存在tangent cylinder结构的地震学证据。

Turn to the top view, use left and right symmetry line to draw tangent plane curve. Open drive surface order board, choose triple rail, the single tangent plane, and the tangent plane width measurement, to create the oval curved surface.

转到上视图，使用左右对称线绘制切面曲线，打开导轨曲面命令面板，选择三导轨，单切面，宽度切面量度，建立椭圆曲面。

Pegasus needle, pedal normally take some time as the time after the step is tangent , and presser foot lift, but the workers said yesterday that the bottom line is easy when the needle off the tangent , tangent brandished a knife and I wanted to transfer about the time, but not know how to get in,...

飞马双针，踏板一般走一段时间像后踩的时候是切线，然后压脚抬起，可是昨天工人说双针切线的时候底线容易折，我就想调一下切线挥刀的时间，可是不知道怎么弄的，。。。

Pegasus needle, pedal normally take some time as the time after the step is tangent , and presser foot lift, but the workers said yesterday that the bottom line is easy when the needle off tangent , I wanted something fast time tangent brandished a knife, but not know how to get in,...

飞马双针，踏板一般走一段时间像后踩的时候是切线，然后压脚抬起，可是昨天工人说双针切线的时候底线容易折，我就想调一下切线挥刀的时间，可是不知道怎么弄的，。。。

Firstly, the quadric surface with three points which doesn't on one line is fitted, and then the tangent plane of this fitting surface is got. Meanwhile, the random tangent plane of surface patch subdivided is got also. Finally, the distance can be obtained through iteration between two tangent planes.

首先对点云数据中邻域不在同一直线的三个点进行局部二次曲面拟合，并求取该拟合曲面的切平面，同时求得细分曲面片任意一点处的切平面，最后在两个切平面上进行点对迭代运算，得到点到曲面片的最短距离。

Cone of tangent; tangent cone; tangent-directrixed cone

选取要包括在拔模线中或从中排除的参照曲线段。。。。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。