查询词典 area of a circle

Thus, evaluation of the minimum zone circle could be solved effectively.Three methods of assessment of roundness error were proposed in this dissertation. Based on the criteria of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle and convex hull, a unified approach was proposed to evaluate roundness error of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle. Evaluation of the minimum zone circle, minimum circumscribed circle and maximum inscribed circle was fulfilled with rotation based the contact pattern. The minimum circumscribed circle and maximum inscribed circle were evaluated with curvature and the curvature circle.

本文提出了三种圆度误差评定的方法：根据最小区域圆、最小外接圆、最大内接圆在极坐标系下的判别准则，利用计算几何中的凸壳理论，提出了一种统一的评定方法，实现了对最小区域圆、最小外接圆、最大内接圆的误差评定；基于接触斑点的检验原理，利用旋转法，实现了最小区域圆、最小外接圆和最大内接圆的误差评定；利用曲率和曲率圆，实现了对最小外接圆和最大内接圆的误差评定。

First, this article introduced 2 grade of rotary kiln principle of work and the equipment, to rolled the circle mechanics behavior to carry on the analysis, proposed - rolled the circle - under roller's rotary kiln overall modelling based on the tube body - kiln liner - big tooth ring, to rolled the circle - under roller's contact stress to carry on the finite element analysis the method, and obtained rolled the circle contact stress the size and the distribution rule, finally indicated that rolled the circle contact stress mainly to have two main peak values and the sudden change in one week, appeared is rolling the circle and the under roller contact area; Then, rolls the circle the stress to regard as is the principal stress unknown plane stress test, the use quite mature modern test technology, proposed rolls the circle stress test the principle and the plan, and to rolled the circle the stress to carry on the scene test, the stress which the scene test analysis result and the finite element analysis calculated has compared, had proven the whole method modelling's finite element analysis method's rationality and rolled the circle - under roller contact stress the result accuracy; Finally, uses ANSYS APDL the re-development technology, in view of 2 grades of rotary kilns, rolled the circle - under roller contact stress the overall finite element analytic method to carry on the re-development.

首先，本文介绍了2档回转窑工作原理和装置，对滚圈的力学行为进行了分析，提出了基于筒体-窑衬-大齿圈-滚圈-托轮的回转窑整体建模，对滚圈-托轮的接触应力进行有限元分析的方法，并得到了滚圈接触应力的大小和分布规律，结果表明滚圈接触应力在一周内主要存在两个主要的峰值和突变，都出现在滚圈与托轮接触区域；然后，把滚圈的受力看成是主应力未知的平面应力的测试，利用比较成熟的现代测试技术，提出了滚圈应力测试的原理和方案，并对滚圈的应力进行了现场测试，现场测试分析结果与有限元分析计算出的应力相比较，证明了整体法建模的有限元分析方法的合理性和滚圈-托轮接触应力的结果的正确性；最后，利用ANSYS的APDL的二次开发技术，针对2档回转窑，就滚圈-托轮接触应力的整体有限元分析法进行了二次开发。

The relationship between the minimum zone circle, minimum circumscribed circle and maximum inscribed circle was studied. Based on their relationship, the minimum zone circle and minimum circumscribed circle, maximum inscribed circle were transformed mutually.

本文研究了最小区域圆与最小外接圆、最大内接圆特征点的相互关系，实现了最小区域圆与最小外接圆、最大内接圆的相互转化，可有效解决最小区域圆的误差评定。

Yangtze Delta Urban Economic Circle, Zhujiang Delta Urban Economic Circle, Beijing-Tianjin-Hebei Urban Economic Circle, Chengdu-Chongqing Urban Economic Circle, and Wuhan Urban Economic Circle are five important urban economic circles, among which, four economic circles except Wuhan Urban Economic Circle have club convergence phenomenon and this club convergence is greatly related to industrialization degree, inner economic structure and innovative ability of the five economic circles.

长江三角洲城市圈、珠江三角洲城市圈、京津冀城市圈、成渝城市圈、武汉城市圈是我国五个重要的城市圈；其中，除武汉城市圈外其他四个城市圈均存在不同程度的俱乐部趋同，而且这种趋同和五大城市圈的工业化程度、内部经济结构及创新能力有很大关系。

December 12, 2006 in Yanglin in support of the main ring began to run, followed by Circle in the sharp group blog Management Forum team support, advice and help, in the high mountains on being aware of small, Taoyuan Daisen, high quality, such as Cong-jie joined the circle of the Lord, in the main consisting of classic circle the tireless efforts of the management team, we were sharp double blog and Sina blog circle circle of outstanding performance -82 million in the 620,000 rise blog circle

去年的今日，在和群体文化交流的基础上，我们从横向的博圈交流向跨越网站的博客文化传播领域延伸，我和一群不怕争议不畏艰难的创新者大胆的尝试着，并以身体力行的榜样作用协同团队成功的组织了以下活动

In accordance with the Provisions on the Protection of Geographical Indication Products issued by National Bureau of Quality Inspection, by the end of 2009, 21 kinds of products in the province had obtained the protection of national geographical indication products including Zanhuang Chinese Date in Shijiazhuang Area; Shacheng Grape Wine, and Xuanghua Milk Grape in Zhangjiakou Area; Shanzhuang Old Wine, Weichang Potato, Chengde Guoguang Apple in Chengde Area; Changli Grape Wine, Lulong Silk Noddles, and Shimen Walnut in Qinhuangdao Area; Lixian County Chinese Yam, and Rongcheng Bamboo Shoot in Baoding Area; Botou Pear, Cangzhou Golden-Silk Jujube, and Huanghua Winter Dater in Cangzhou Area; Ningjin Pear in Xingtai Area; Shexian County Walnut, Shexian County Pepper, Weixian County Pear, Yongnian Garlic, and Wu'an Millet in Handan Area; and Jingdong Chestnut (including the administration regions of Qianxi, Qian'an and Zunhua in Tangshan Area, Funing, Qinglong, and Lulong in Qinhuangdao Area, Xinglong, Kuangcheng, Pingquan, Chengde, Luanping, and Fengning in Chengde Area).

按照国家质检总局颁布的《地理标志产品保护规定》，截至2009年底，我省石家庄地区赞皇大枣；张家口地区沙城葡萄酒、宣化牛奶葡萄；承德地区山庄老酒、围场马铃薯、承德国光苹果；秦皇岛地区昌黎葡萄酒、卢龙粉丝、石门核桃；保定地区蠡县麻山药、容城绿竹笋；沧州地区泊头鸭梨、沧州金丝小枣、黄骅冬枣；邢台地区宁晋鸭梨；邯郸地区涉县核桃、涉县花椒、魏县鸭梨、永年大蒜、武安小米；京东板栗（唐山地区的迁西、迁安、遵化，秦皇岛地区的抚宁、青龙、卢龙，承德地区的兴隆、宽城、平泉、承德、栾平、丰宁等行政区域）共计21种产品已获得国家地理标志产品保护。

France and Finland advertising business district, shopping district computer advertising, TV advertising business district, the film industry advertising business district, beautiful models circle, beautiful woman in the circle model, beauty girl model ring, beautiful ring girls, models, beauty model ring, ring cameraman, photography division ring; computer video advertising business district; Mobile:+0086-13901623260; Netherlands Montenegro Czech, Croatia and Latvia advertising business district, shopping district computer advertising, television advertising business district, the film industry advertising business district, beautiful models circle, beautiful woman in the circle model, beauty girl model ring, beautiful ring girls, models, beauty model ring, ring cameraman, photographers circle; computer video advertising business district; Mobile:+

北美洲广告商圈，电脑广告商圈，电视台广告商圈，电影界广告商圈，美女模特圈，美丽女人模特圈，美容姑娘模特圈，漂亮女孩模特圈，美人模特圈，摄像师圈，摄影师圈；电脑视频广告商圈；Mobile：+0086-13901623260；安提瓜和巴布达巴巴多斯巴哈马巴拿马伯利兹多米尼加多米尼克广告商圈，电脑广告商圈，电视台广告商圈，电影界广告商圈，美女模特圈，美丽女人模特圈，美容姑娘模特圈，漂亮女孩模特圈，美人模特圈，摄像师圈，摄影师圈；电脑视频广告商圈；Mobile：+

Beijing Real Estate and Construction Bar Association Professional Committee of Liu Hua, deputy director of the Law Society: The contract agreement in the area, it seems to me there are at least two flaws: First, it agreed to construction area for the sale area, construction area is passed and the pool area and the area, and in this contract on the pool area also lacks transparency, developers will not tell you specific assessments where the location of the area, the specific area is the number, which for him provided an opportunity for fraud; Secondly, the contract agreed by the parties, permit the forecast area of 3% error, if the pool size increases as long as no more than 3%, you can only increase the pool for this increase the size back the principal.

北京地产及建造界律师协会专业委员会刘华副主任律师公会：合同协议，在该地区，在我看来至少有两个缺陷：第一，它同意建筑面积的销售区，建筑面积是通过和游泳池区和地区，并在此合同的游泳池也缺乏透明度，开发商不会告诉你具体评估那里的位置，面积，具体领域是的数目，这为他提供了一个机会，欺诈；其次，该合同约定，允许预测面积的3 ％的错误，如果池大小的增加，只要不超过3％，你只能增加池的大小增加本金。

Comparing the landscape types of 1995 with that of 2005, we find out that:①the natural arbors are decreasing, with patches more fragmentation, size more odds, shapes more complex;②the area of natural shrubberies is increasing, with patches less fragmentation, shapes more simple and formulary ,the size of patches more even;③the area of natural grasses is increasing, with patches less fragmentation, shapes of patches more odds;④the area of timbers is increasing, with patches more dominance in landscape, more connectivity;⑤the area of Eucalyptus increases, with patches less fragmentation, shapes of patches more complex , more convergence, more connectivity;⑥the area of orchards is increasing, more connectivity;⑦the patches of the rubber is becoming more assemble, more connectivity, more formulary;⑧the area of plowland increases;⑨the area of reservoirs, rivers and ponds increases, with patches more assemble;⑩the area of cities decreases, with patches more dispersing, with shape more complexthe area of countries increases, with patches less connectivity, more dispersing, with shape more complex; the patches of the rest lands are more dispersing, with shape more complex;(3)In the process of economic development in the upper reaches of the Changhuajiang river watershed, a series of the ecological environment problems have appeared because a lot of landscape function broke off, and the connection of human landscape with natural landscape decreased, which aroused by the fragmentation of natural and semi-nature landscapes increased, the stability of the landscape structure decreased, as well as stress of human disturbance, resource and environment upon the landscape increased gradually.

3昌化江上游流域在经济发展进程中，自然与半自然景观破碎度增加，自然景观结构稳定性下降，人为干扰、资源和环境对景观胁迫逐渐增大，中断了许多生态过程，导致城市等人文景观与自然景观连接度很差，产生了一系列的生态环境问题。

Based on the criteria of roundness error, the definition of the circumscribed circle and inscribed circle with the least roundness error was given. The solution to the circumscribed circle and inscribed circle with the least roundness error was proposed when they met with the criterion of obtuse triangle.

根据圆度误差评定的判别准则，给出具有最小误差的外接圆和内接圆的定义，并提出了解决具有最小误差的外接圆和内接圆满足钝角三角形准则时的误差评定方法。

Great. What repertoire did you see?

太棒了。你看的是什么剧目？

I prepared not to accept such ridiculousness:"Please," I said to him.

我可不想理会这套荒谬的东西："请你通情达理一点儿。"