圆

That is, for every circle the cross-ratio of its four intersection points with neighboring circles is equal to a negative constant.

给出交比为负常数的SG圆模式的定义，即其中每一个圆与它相邻圆的四个交点的交比等于一个给定的负常数。

The most popular during the Shang Dynasty was the "bird and beast" design,hu,(long-necked and small opening, deep-bellied with round base, some with overhanging handle),you (elliptic opening, deep-bellied with round base, has a lid and overhanging handle), lei (some round and some square, openings vary in size, short neck with square shoulders, deep bellied, with curling feet or round base, and has a lid), fou and the like are wine vessels, jue (deep-bellied, tri-pedestal, can be heated on top of fire, protruding grooves at the top for easy pouring), gu (the most common wine-drinking utensil, more often used in combination with jue, which is bigger, opening is shaped like a bugle, long neck, thin waist, tall curling feet), zh(similar to the zun in shape but smaller, some with lids), gong (oval belly, has an outer edge for flow of wine, short handles, bottom has curling feet, lid is in the shape of the head of a beast, some has an entire body like a wild animal, with small spoon as accessory), bei, zhen is to drink from.

尊（鼓腹、敞口、高颈，底有圈足，形制较多，商代以鸟兽形尊最为流行）、壶（长颈、敛口，有的有盖，深腹圆座，有的有提梁）、卣（椭圆口，深腹圆座，有盖和提梁）、罍（有圆形和方形，口大小不一，短颈方肩、深腹，圈足或圆底座，有盖）、缶等是盛酒的器具，爵（深腹、三足，可在火上加温，上端有伸出的沟槽以倒酒）、觚（最常用的饮酒器，多与爵相配使用，比爵小，口呈喇叭状，长颈、细腰、高圈足）、觯，觥（椭圆腹，有流酒的外沿和短提把，底为圈足，有兽头形盖，也有整体为兽形的，并附有小勺）、杯、盏是饮酒的器具。

At the same time, the electric potential and the electric intensity at the central axes and in the distance area of the charged ring are discussed.

本文中我们运用椭圆积分法计算出了均匀带电圆环空间电位和电场分布，使我们对其产生的电位和电场有一个全面了解。1均匀带电圆环的电位均匀带电q的圆环半径为b，以环心。

Based on the analysis and investigations of dual-band microstrip annular ring slot antenna, a novel miniaturized dual-band annular ring slot antenna for WLAN applications is presented. It utilizes two rectangle notches to overcome the problem of resonant effects caused by the distance between inner and outer ring slots.

基于对微带双圆环缝隙天线的研究与分析，通过连接型矩形槽设计克服了内、外环距对谐振效果的影响，提出了一种应用于无线局域网通信的小型双频圆环缝隙天线，并且可以实现圆极化。

This paper establishes cubic spline function, analyzes subsection curve function and curve slope and curvature, at last decides to place the curve especial points which can be obtain easement curve length and other line parameters, such as the ZH point (end of line and beginning of transition curve), the HY point (end of transition curve and beginning of circular curve), the QZ point, the YH point (end of circular curve and beginning of transition curve), the HZ point (end of transition curve and beginning of line).

针对公路平面线形的8种组合类型，其线形元素特征则由最基本的直线、圆曲线、缓和曲线组成的特点，解析三次样条函数模型，得分段曲线函数、曲线斜率、曲率，从而确定曲线特征点（直缓ZH点、缓圆HY点、曲中QZ点、圆缓YH点、缓直HZ点）位置，进而得到曲线缓和曲线长度及其他线形参数。

This model includes not only the effects on the dynamic capability of wood-working circular saw machine by the structure and installing position of each rotary components(such as saw,flange, fastening nut,principle axis,pulley,and so on)of wood-working circular saw machine,but also the effects by the structural parameter,working parameter,and the installing position of the bearing axletree.

本文通过对木工圆锯机结构、支承轴承特性及工作过程的分析，以国产MJ-90精密裁板锯转子系统(锯片、塔轮、锯轴、夹持装置和支承轴承)为研究对象，首次将木工圆锯机旋转构件作为转子系统，运用美国Rotating Machinery Analysis公司开发的大型转子系统动力学商业软件包XLROTOR，建立了木工圆锯机转子系统动力学模型。

Hammer Law round of plant type medium or small, medium-sized leaves, oval fruit Chengyuan hammer-shaped or cylindrical short, Guogeng files or droop, flesh thick, spicy middle, mainly fresh Qingguo, such as Nanjing morning Law Chengdu two axes, such as Kunming Horns Law.

圆锤椒类株型中等或矮小，叶片中等大小，卵圆，果实呈圆锤形或短圆柱形，果梗朝天或下垂，果肉较厚，辣味中等，主要鲜食青果，如南京早椒、成都二斧头、昆明牛角椒等。

Nle key to every man is his thought.

人生是一个自我进化的圆从一个微乎其微的小小的圆永无止境地向四周扩展成新的更大的圆。

Cutting Products has the main blade blade, paper cutter sub-divided into paper and single-pole, grinding wheel, slotting machine knives, veneer cutting blade, cutting blade on three sides, rotating cutting knife, cross-cutting knives, cylindrical toilet paper cutter, sub - knife-cut from top to bottom, leather upper and lower knives, leather cutter, cutting knife, cut circle engraved blade, cut pipe cutter, bowl blade, Introduction paper, cutting knives, meat slicing knives, vegetable knife slices, ham thin knife, round plate rolling scissors, slitting Slitter knives, cutting blade, bearing knives, knife lap, multi-blade knife ring, butterfly knives, flower asbestos knives, copper foil cutting knife, foil cutter, cutting knife PCB , PP cutting knife, cut the foot blades, blade shearing machine, rolling blade, steel cutting knives, knives broken scrap, plastics crushing knives, pelletizing knives, pelletizing hob, hob pelletizing alloys, rubber blade, closure at the end of knife, bag machine knives, even the volume BAG blade, plywood blade, woodworking planer knives, slicer knives, punching machine blade, scissors fly films, scraper, blade coating,±Series, tungsten steel blades, tungsten steel round blade, cemented carbide paper knife, three holes blade, chemical fiber blades,knives, profile knives, cutting knives, such as cloth-like, non-standard blade can be customized.

主要刀片产品有切纸刀片，分纸刀，分纸单刀及砂轮，开槽机刀，单板切纸刀片，三面切纸刀片，旋转切纸刀，横切刀，圆筒卫生纸切刀，分切上下刀，皮革上下刀，皮革裁刀，切光刀，切刻圆刀片，切管刀，碗刀片，导纸片，模切刀，羊肉切片刀，蔬菜切片刀，火腿薄切刀，圆盘滚剪刀，纵剪分条刀，切条刀片，轴承刀，光刀圈，多刃刀圈，蝶形刀，石棉瓦花刀，铜箔裁切刀，铝箔切刀，线路板裁切刀，PP裁切刀，切脚机刀片，剪板机刀片，轧钢刀片，钢筋剪断刀，废钢破碎刀，塑料粉碎刀，切粒刀，切粒滚刀，合金切粒滚刀，橡胶刀片，底封刀，制袋机刀，连卷袋刀片，胶合板刀片，木工刨刀，切片机刀，冲剪机刀片，飞剪刀片，刮刀，涂布刮刀，薄刀系列，钨钢薄刀片，钨钢圆刀片，超硬合金裁纸刀，三孔刀片，化纤刀片，切布刀，齿形刀，样布裁切刀等，非标刀片可定制。

With minimizing the move distance as the optimization objective, the circular curve radius and circle center coordinate were then optimized, the transition curve length, the move distance of each measured points, the mileages and the coordinates of the feature points and so on were further computed.

首先利用坐标法计算各测点的坐标，再计算正矢，然后根据正矢的变化规律选定圆曲线上的测点，用最小二乘法拟合出既有线圆曲线的半径和圆心坐标，并以拨正量最小为优化目标，优化圆曲线半径及圆心，进而计算出缓和曲线的长度、各测点的拨正量、特征点的里程和坐标等。

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。