空间曲线

Moreover, in IDDT diagnosis, the conception of fault feature curve and feature space is proposed to diagnose the fault in the analog and mixed-signal circuit.

此外，对动态电流故障诊断算法提出特征空间和特征曲线的概念，以实现对动态电流信号中的故障信息的有效提取。

Spiral surface machining. How to form slick curve from data points, define reasonable machining points, find and exclude interference and so on are solved too in this article.

解决了如何由数据点拟合成光滑曲线、确定合理的步距点、找出干涉、排除干涉等一系列求解空间刀具轨迹的关键问题，并且运用VC++、Matlab语言实现了上述算法及仿真加工过程。

Mainly, the course contains: Introduction of the Concepts of Human Factors and System,Human Factors Research Methodologies,Information Input and Processing,Text, Graphics, symbols, and Codes,Learning Curve,Visual Displays of Dynamic Information,Auditory, Tactual, and Olfactory Displays,Physical Work and Manual Materials Handling,Motor Skills,Human Control of Systems,.Hand Tools and Devices,Applied Anthropometrics, Work-space Design, and Seating,Illumination,Noise,Human Error, Accidents, and Safety.

本课程内容主要包括：人因工程与系统观念之介绍，人因工程研究之方法，资讯输入与处理，文字，图形，符号以及符码，学习曲线，动态资讯之视觉显示，听觉，触觉以及嗅觉显示，人员体力活动与人工物料搬运，运动技能，人员对於系统之控制，手工具和手操作器具之设计，应用人类测量学与作业空间之设计，照明，噪音，人为误差，意外，以及安全。

And the tangent plane of three characteristic curves on the tire determines the spatial position of the tested wheel.

每个车轮使用3个线结构激光传感器，通过求取轮胎上3条特征曲线的切平面来确定车轮的空间位置。

Casual fashion, dignified and elegant; simple and not unusual, but not eye-catching delicate, beautiful and not fancy, leisure and not loose at any time, any space dress can make sense of smell to the prevailing fashion, elegant curves, noble Contains the unique style of life of the 10,000 kinds of air movement in the West and the East's ingenious combination of local culture is one to savor, the residual sound traditional.

时尚休闲、高雅端庄；简单而不平凡、精致而不抢眼、美丽而不花俏、休闲而不松散、在任何时间任何空间着装，均能让人嗅觉到流行的时尚、优雅的曲线、高贵的内含、独特的风格，风情万种的西方动感气息与东方本土文化的巧妙结合更是让人细细品味，余音绕梁。

For resolve this problem, more and more scholars try to find new modeling methods in the space of trigonometric functions.

为了解决NURBS模型中的局限性，近年来，人们试图在三角函数空间中寻求新的曲线曲面造型方法。

In this paper, a lot of research works of algorithms of mining CAD has been done. Many important mine specialty graph operation algorithms have been put forward. The main results are as follows: polygons cut out algorithm, two close polygons mutual, merge and subtract algorithm, polygon vector fill, any vector polygons area calculating and sequence polygons or multifold which has the direction and region area calculating, curve smoothing, graph element search for any region, graph element attrib collect in any region, parallel polygon or vector intersection-point push out or pull in, ore reserves and grade calculating for any type polygon, mine spatial data searching and boundary line tracking and automatic link algorithm etc.

论文在矿山图形算法研究方面做了大量的工作，提出了许多有价值的矿山专业图形运算算法，主要算法有：多边形裁剪算法、闭多边形的加、减、并算法、多边形的矢量填充算法、任意有向多边形、有向多连域、有向多边形序列面积算法、多种曲线光滑算法、任意区域的图元搜索算法、任意区域图元属性提取算法、多边形平行外推/内缩算法、任意多边形储量品位计算、矿山空间数据搜索算法、界线的自动追踪和连接等。

Aiming at slope types, features, deformation traits and destroy mechanism of high steep valley slope at Jinping Ⅰ Hydropower Station, and applying monitoring results, a comprehensive prediction design is suggested. In the space, according to the occurrences of unfavorable geological phenomena such as faults F5, f(subscript 42-9) deep fracture SL(subscript 44-1) and lamprophyre vein X, all of them can be treated as the boundary conditions for slides, potential instable blocks of slope on the left abutment are estimated which take on a wedge-shaped sliding model. In the sametime, through using three kinds of joint prediction methods such as statistic models and nonlinear models, judging from the shape of curves of deformation-time and their deformation velocities, it is found that the slope is at the state of slowly creeping to uniform deforming with a deforming velocity of 0.05 mm/d.

针对锦屏一级水电站左岸高边坡的边坡类型、边坡特征、变形特点和变形机制，在监测成果的基础上，对其进行综合预报，空间上判断左岸拱肩边坡由断层F5，f(下标 42-9)、深部裂缝SL(下标 44-1)及煌斑岩脉X互相组合，形成可能边坡失稳块体的边界条件、楔型体滑移失稳模式：时间上采用统计模型及非线性模型多种方法联合预报，根据边坡变形时序曲线的形态及变形速率指出：边坡目前处在缓慢蠕动至匀速变形阶段，变形速率小于0.05mm/d。

The numerical simulation are consistent with the analytical results contained in chapter 2. In chapter 4, Mapping and chaos .We plot poincare cross-sections, the results illuminate that the two electrostatic waves which satisfy the resonant criterion found in this paper have more effective stochastic acceleration than nonresonant condition.

第四章：通过计算相空间的庞加莱截面和粒子的速度分布曲线，说明在对磁化等离子体加热方面，满足共振条件的两个静电波具有优越性。

Occurrence records from 1864 locations and 34 environmental variables from Daymet datasets were gathered, four modeling methods including Logistic Regression, Classification and Regression Trees, Genetic Algorithm for Rule-Set Prediction and maximum entropy method were used to generate potential geographic distributions for Dreissena polymorpha in the continental USA. Then three statistical criteria including area under the Receiver Operating Characteristic curve, correlation and Kappa were calculated to evaluate the performance of the models, followed by analyses of major variable contributions.

论文以1864个美国外来入侵物种斑马纹贻贝定点发生数据和开放式基础地理信息数据库Daymet的34个环境变量为主要信息源，采用逻辑斯蒂回归、分类与回归树模型、基于规则的遗传算法、最大熵法4种途径，建立美国大陆部分潜在生境预测模型，从接受者运行特征曲线下面积、Pearson相关系数、Kappa值3个方面来检验模型预测精度，在此基础上分析斑马纹贻贝的空间分布规律及其环境影响因素。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。