查询词典 tracing paper

In the process of contour tracing, contour lines are gained by tracing in anticlockwise order and a method of backdate search which ensures the correctness of the algorithm is used for contour tracing at those pixels where other contour pixels can not be continuously traced. By analysis of the neighbouring pixels, this paper avoids judging those pixels that no need to be compared again.

提出了一种逆时针追踪轮廓线的彩色图像区域分割算法，其思想是按逆时针顺序追踪轮廓线，在追踪过程中避免了像素点的重复判断，采用回溯搜索解决奇点问题，从而保证了追踪过程的连续性和正确性。

The techniques for obtaining initial tracing points and tracing intersection branches are the most important issues in surface intersection algorithm. This paper reviews the plane vector field method which is exploited to get initial tracing points,and gives the relation between normal curvature and tracing direction.

平面向量场与曲率分析在曲面求交中的应用宁涛，马德昌，王亚平，唐荣锡（北京航空航天大学制造工程系北京100083）摘要在曲面求交算法中，初始跟踪点的确定和交线分支的跟踪是最关键的两个问题。

This paper presented a method for tracing the intersections of two implicit surfaces.the most obvious advantage of this method is: when tracing the intersections, it could quickly get the next tracing point by intersecting this square plane with the two implicit surfaces.

该方法最主要的优点是：在跟踪隐式曲面的交线时，在前一个跟踪交点已经求得的情况下，利用正方形与两个隐式曲面的交点，即可快速有效地求出下一个跟踪点，而不用涉及迭代收敛的判断。

An algorithm about picking element is presented in this paper: First,getting certain amounts of boundary points by contour tracing from a point near an element and calculating primal parameters; Then, picking the element completely by element tracing guided by these initial parameters, jumping over broken points and intersecting points; At last,deleting the picked element from the raster image and renewing other elements' information intersecting with the picked element.

本文提出一种图元拾取算法：首先从图元附近一点开始，经轮廓跟踪、参数拟合得到图元的初始参数；然后在初始参数引导下，对图元定向跟踪，跳过断点和交点，最大限度的拾取整个图元；最后在光栅图像上删除该图元，并恢复与之相交的其它图元的交点信息。

The phylogeny and applied prospect of MES are summarized in the paper. The principle of this system is analyzed from the point of view of acoustics. The surveying and filtering technology of auxiliary parameters, sounding data and the theory of image form, backscatter strength data processing, are researched deeply in the paper. The optimal model of velocity of sound is given. For sound ray tracing, some methods of correction of sound ray curve are developed. At the same time, an ideal model of sound ray tracing is proved and given. The GPS technology is applied for the determination of tide, attitude of vessel. Moreover, some methods are given. As an important topic, the systematic error is discussed in the paper. Some filtering methods are researched in this paper. Based on the current methods of image processing, the procedure and methods are tested and given that adapt to sonar image processing.

本文研究的工作是在总结多波束声纳测深系统的发展历史、应用前景的基础上，从声学角度分析了多波束系统的工作原理；对多波束辅助参数的测定和滤波方法、测深数据的滤波方法、多波束声纳图像的形成机理、图像处理以及最终应用等作了比较深入的研究；得出了适合于多波束精密深度计算的最优声速模型和声线改正模型；提出了 GPS 载波相位定位技术用于多波束辅助参数测量的思想、算法，改善了多波束系统的作业模式；系统地分析了深度数据的误差来源和类型，首次将系统误差作为影响测深精度的主要因素给以研究，并给出了削弱系统误差的方法，提高了深度数据的质量；对多波束声纳图像的形成、处理方法进行了细致的研究，给出了适合多波束图像处理的算法和流程，并从理论和实践上对声纳图像的应用进行了比较全面的研究。

This paper investigated the true propagation paths of acoustic wave in two-dimensional temperature gradient field-single peaked symmetry and deflective respectively, using the two- dimensional acoustic ray tracing method of forward deploying triangle. Besides, a simulating calculation and analysis of this acoustic ray tracing algorithm in model temperature was given.

该文使用二维空间中的三角形前向展开方法，对二维温度梯度场中的声线轨迹进行追踪，并分别在具体的单峰对称温度场和单峰偏斜温度场模型中，对该声线追踪算法进行了仿真计算和分析。

Remove tracing paper to find exact copy of original draft .

移开复描纸，就可以看到与原图一模一样的复版。

For weeks, and sometimes months, designers meticulously trace all the details of a single color of the design on tracing paper.

在接下来的几个星期，甚至几个月里，女画师们精诚地把丝巾图案中的每一个细节都转画到透明纸上，直到所有图案印记都逐一上色完毕。

First design renderings, will be carving patterns, select a certain percentage, copied to the tracing paper on the expansion.

先设计效果图，将要雕刻的图案，选择一定的比例，扩大复制到描图纸上。

Then, I printed the outlined tree onto high-quality tracing paper using my HP LaserJet 2200d printer.

然后，我将树的轮廓用HP LaserJet 2200d在高级描图纸上打印出来。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。