轨迹线

Construct an animation showing the tangent sweeping out the interior of the 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。

This paper focuses on designing the intelligent robot of circumambulate by studying the ZiGuang fundamental platform of robot development、Freescale MC9S08GB60 MCU and the intelligent robot of circumambulate. The robot chooses the sensor as the carrier of identify of the path and judge the circuitry by sensor.

本文通过学习紫光智能机器人软件开发平台和机器人主控芯片Freescale 的MC9S08GB60 MCU，以及巡线机器人的基础知识，选择灰度传感器作为路径识别载体，并利用灰度传感器进行线路判别实现机器人的按轨迹自动前进。

The bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity, rotor rotating speed, eccentric mass is analyzed, in the numerical value analysis method. The bifurcation diagrams, maximum Lyapunov exponent diagrams, Poincaré maps, phase plane portraits, trajectories of journal center, time-history curve, amplitude spectra diagrams of the rotor motion are used. The convert and evolution course of periodical response, quasi-periodical response, double-periodical bifurcation, chaos of the system response is analyzed.(3). It is deduced that the general differential equation of bending-torsional-pendular coupling vibration about rotor with the gyroscopic moment. On the basis of this equation, the general differential equations of coupled bending, torsional and pendular nonlinear vibration about rotor with unbalance character and rubbing character are deduced.

2建立了具有非线性刚度的转子系统在非稳态非线性油膜力作用下的径向碰摩动力学微分方程，并应用含高阶余项的非线性动力方程的线性化数值法研究了此类系统响应的复杂动力学行为，利用转子响应的分岔图、最大Lyapunov指数曲线、Poincaré截面映射、时域波形、相轨线、轴心轨迹、幅值谱等图形分析了系统响应的周期运动、拟周期运动、倍周期分岔、混沌等运动形式的转化与演变过程，重点研究了非线性刚度、转子转速、偏心质量等系统参数对碰摩故障转子系统的分岔和混沌行为的影响。

Sometimes this is a fairly slow and systematic scan that appears as a solid stripe on an eyetracking heatmap. Other times users move faster, creating a spottier heatmap.

有时候这是比较慢的过程，在眼睛轨迹热图上显示为实线；但有时候用户会移动很快，在热点图上表示为断续的点状。

In this paper an innovative method for machining sculptured surfaces is presented. By using a disc cutter with a concave end instead of traditional ball-ended or drum-shaped tools, and adjusting the cut- ted axis to swing relative to the component being machined under some special rules, the envelope formed by the trace of the tool-nose may have the same derivative up to the third order as the required theoretical surface.

本文提出了一种加工自由曲面的新方法，即采用中凹的盘形铣刀取代传统的球头或鼓形铣刀，在每一行程中让刀具轴线相对于工件按特定的规律摆动，使得在垂直于进给方向的法截面中，由刀尖轨迹形成的包络面与理论曲面的法截线具有相同的1～3阶导数，从而在保持精度不变的前提下，使实际行程次数得以大幅度的减少。

By cooperating the two-model method with parallelogram frame in this paper, the curve of two crossed cylinders with their axises in a state of vertical can be easily and accurately realized, and the mechanism withdrawn from the method can be applied directly to the hole gas-cutting on high pressure capsules.

文摘：采用双靠模法与平行四边形机构的组合，可简易、准确地实现轴线垂直的两圆柱体相贯线轨迹的复现，其原理可直接用于压力容器上圆孔的气割。

By means of using a disc cutter with a concave end instead of traditional ball-ended or flat-ended ones,and adjusting the cutter axis to move relatively to the component being machined according to some special rules,the envelop formed by the trace of the tool-nose in each pass and the required surface have the same derivatives up to the second order in the plane normal to the feeding direction.

采用二阶密切曲率法，即采用中凹的盘形铣刀取代传统的球头或鼓形铣刀，在每一行程中让刀具轴线相对于工件按特定的规律摆动，使得在垂直于进给方向的法截面中，由刀尖轨迹形成的包络面与理论曲面的法截线具有相同的1阶？

The nightside sky is an infinite lattice of shining hairlines that interlock planetoids and track er ratic spirals of glowing gnats.

背阴面的天空是一个由闪耀的细线交织而成的广阔网络，串联着许多小行星以及牵引着大量以螺旋形轨迹漂浮着的细小物体。

The smoothing algorithm can improve the intelligibility of vocoders at ultra low bit rate and save the quantization bits of LSF and energy parameters, which is significant to ultra low bit rate speech coding algorithms.

平滑算法在不引起听觉上的畸变和降低模型合成语音的听觉质量的情况下，使线谱频率参数和能量参数的变化轨迹得到了平滑，提高了两种参数各自的帧间相关性，从而降低了量化失真。

The moving points on the geometric locus are observed to study the properties of ovals .

为了考察卵形线的性态，对动点的轨迹曲线进行了研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。