无效环 invalid loops(1)   invalid loops      Then, connect the gaps generated during offsetting using approximate arc segments, delete local invalid loops utilizing interference continuity;      其次用近似圆弧段连接等距形成的断裂，利用干涉连贯性和干涉边特性在等距过程中去除局部无效环； 短句来源   相似匹配句对      The Ring of Satum      土星环 短句来源      (4)Ineffective: no alleviation.      ④无效。 短句来源      On C-Rings      关于C-环 短句来源      But component D and G have no effect on proliferation of MSC.      D和G组份无效。 短句来源 查询“无效环”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   invalid loops A simple method for invalid loops removal of planar offset curves 例句来源       The robustness of curve offset is compact with reliable invalid loops removal algorithms. 例句来源                Polygon offsetting is an important operation in CAD/CAM,and it is the key problem for pocket machining.Based on the theory that there must be one convex vertex on the local invalid loops and one concave vertex on the global invalid loops,taking the convex and interfering concave vertex as seed vertices,the local and global invalid loops are identified by using the consistency of interfering edges.The offset polygon can be realized by offsetting the no-interfered part of the original polygon.By using the con...             多边形的等距偏移是CAD/CAM领域中的一个基础性问题 ,是型腔环切加工刀具轨迹生成的关键。根据无效环在原始多边形上的对应连续线段必有一凸或凹点 ,从多边形的凸点和干涉凹点出发 ,利用干涉边的连贯性逐步确定无效环 ,最后对多边形中的非干涉区域作等距偏移 ,实现多边形的等距偏移。该方法利用干涉区域的连贯性避免了大量不必要的求交计算 ,同时支持带有孤岛的多边形等距偏移。其算法复杂度接近于O(n) ,其中n为多边形顶点个数。 文摘来源          A series of closed sectional contours of polygon are achieved resulting from sliced STL data.Because the facula(or nozzle) has certain size,sectional contours need to be compensated in order to ensure the part's precision.The calculation method of compensational vector was simplified and the new processing method was proposed to deal with two types of sharp corner.To process self-intersection that might appear after polygonal contours compensation,a sweep-line algorithm based on monotone chains was presente...             光固化快速成型数据模型切片分层的结果是一系列封闭的多边形截面轮廓,由于光斑(或喷嘴)具有一定的尺寸大小,为了保证零件的制造精度,就需要对多边形截面轮廓进行补偿。为此,简化了补偿矢量计算方法,并针对两种尖角情况,提出了新的处理方法。对多边形轮廓补偿后可能出现的自相交现象,采用基于单调链的平面扫描算法,对自交点进行了求解,并提出了一种无效环的简单判别方法,提高了无效环的去除效率。通过无效环的去除,保证了补偿轮廓的正确性,提高了零件的制造精度。 文摘来源          A scanning algorithm of outer contour's equidistant line was presented,and the key technologies of scanning line were discussed in detail.These technologies include computing method of offsetting vector and eliminating method of invalid loop,Boolean operation of between polygons and scanning algorithm of outer contours equidistant line.The proposed algorithm is simple and easy to program and applications show the algorithm is steady and reliable.             提出一种外轮廓等距线填充扫描的生成算法。讨论了填充扫描线生成的关键技术,包括偏移矢量的计算方法、无效环的剔除方法、多边形之间的布尔运算以及外轮廓等距填充扫描线生成算法。提出的方法不仅简单,且易于编程实现。应用表明,算法十分稳定可靠。 文摘来源       相关查询: 环 无效 吡唑环 蒽醌环 钼环 吡咯环 标准环 组织环 铸铁环 鲍尔环 螯合环 2环  对查询结果不满意

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