曲刀

The computer software is worked out to calculate numerically the geometric drive properties: normal curvature, geodesic curvature, induced normal curvature, induced geodesic curvature, lubrication angle, contact line and meshing area, etc.

本文首次建立了在双自由度运动状态下，用直线型切刀包络加工圆柱蜗杆传动的啮合原理数学模型；并编制了相应的计算机软件，对其几何传动特性：法曲。。。

The interpolate algorithms of three-order NURBS curve and double three-orders NURBS surface are presented. The expressions of partial derivative and normal curvature of NURBS surface are derived by the theory of differential geometry. The geometric characteristics of different curvature area of the free-form surfaces are analyzed in detail. All these work lays a theoretical foundation for constructing the cutter location calculating model of free-form surfaces NC machining. 2 On the basis of analyzing the methods of cutter path generation, the standard of evaluating the various methods of cutter path generation is presented. The method of generating cutter path with constant scallop height is presented for the first time.

本文以提高复杂曲面多坐标数控加工精度和加工效率为目的，在对国内外研究现状进行深入分析的基础上，对数控编程中各环节的关键技术问题进行了深入研究，主要内容包括以下几方面： 1 分析了复杂曲面各种造型方法的优缺点，给出了根据各种边界条件所确定自由曲面的NURBS表示方法以及三次NURBS曲线曲面反算算法；用微分几何理论推导了NURBS曲面的偏导矢及法曲率计算表达式；对曲面不同曲率特性区域的几何特征进行了深入分析，为建立复杂曲面的数控加工刀位计算模型奠定了理论基础。

Of which: Korea·bridge stick and knife and scissors series (Korea-owned enterprises), effective good wood office series and the surface of this book, etc.(wooden pen 'filing cabinets' paper planes' calendar frame' the various coils of the 'surface of this), Seiko Kompasu (various Kompasu' plotter 'straight pen' rubbing picture 'products were appraised as the Ministry of Light Industry), Miriam sanjiang feet (various specifications×' set square 'template' scale 'curve board), the East map, Shanghai Butterfly (curve-foot snake-like 'all kinds of plotter feet), the former Qualcomm surface series, effective office series, the sun paper series, more than the Department of Product are my main product.

其中：韩国番桥胶棒及美工刀和剪刀系列，得力佳木质办公系列及本册皮面本等（木质笔筒＇档案柜＇文件架＇台历架＇各种线圈本＇皮面本），精工圆规（各种圆规＇绘图仪＇直线笔＇擦图片＇均被评为轻工业部优质产品），三江仪尺（各种规格丁字尺＇三角板＇模板＇比例尺＇曲线板），东图，上海蝴蝶（曲线蛇形尺＇各种绘图仪尺），前通皮面系列，得力办公系列，阳光纸品系列，以上产品均为我部主打产品。

Patients of small knife were amputated in the superior or inferior transvers ligament of scapula,supraspinous and inferaspinous fossa were released.In operation of local anesthesia with direct vision,superior or inferior transverse ligament of scapula was amputated and suprascapular nerve was released.

局部封闭应用1%利多卡因5ml加曲安奈德40mg，每周1次，连续2～4次；小针刀采用切断肩胛上或下横韧带，肩胛岗上孔、岗下孔松解；手术在局麻直视下行肩胛上或下横韧带切断、松解肩胛上神经。

Gear shaper cutter with convex rake face with hard-tooth-face can improve the ability of anti-collapse efficiently while guarantee the shape precision compared with traditional gear shaper cutter.

硬齿面凸曲前刀面插齿刀和传统插齿刀相比能够在保证构形精度的前提下有效提高刀齿的抗崩刃能力。

Any one who had chanced to pass through the little town of Vernon at this epoch, who had happened to walk across that fine monumental bridge, which will soon be succeeded, let us hope, by some hideous iron cable bridge, might have observed, had he dropped his eyes over the parapet, a man about fifty years of age wearing a leather cap, trousers a waistcoat of coarse gray cloth, to which something yellow which had been a red ribbon, was sewn, shod with wooden sabots, tanned by the sun, his face nearly black his hair nearly white, a large scar on his forehead which ran down upon his cheek, bowed, bent, prematurely aged, who walked nearly every day, hoe sickle in hand, in one of those compartments surrounded by walls which abut on the bridge, border the left bank of the Seine like a chain of terraces, charming enclosures full of flowers of which one could say, were they dddtt.com larger:"these are gardens," were they a little smaller:"these are bouquets."

当年如果8 tt t8.com 有人经过 ssbbww 小城韦尔农，走到那座宏大壮丽的石桥上去游玩（那座桥也许 ssbbww.Com 不久将被一道丑恶不堪的铁索桥所替代），立在桥栏边往下望去，便会看到一个五十左右的男子，戴一顶鸭舌帽，穿一身粗呢褂裤，衣衿上缝着一条泛黄的红丝带，脚上穿的是木鞋，他皮肤焦黄，脸黝黑，头发花白，一条又阔又长的刀痕从额头直到脸颊，弯腰，曲背，未老先衰，几乎整天拿着一把平头铲和一把修枝刀在一个小院里踱来踱去。在塞纳河左岸桥头一带，全是那种院子，每一个都有墙隔开，顺着河边排列，象一长条土台，全都种满花木，非常悦目，如果8 tt t8.com 园子再大一点，就可以 www.ssbbww.com 叫做花园，再小一点，那就是 www.8ttt8.com 花畦了。

Any one who had chanced to pass through the little town of Vernon at this epoch, and who had happened to walk across that fine monumental bridge, which will soon be succeeded, let us hope, by some hideous iron cable bridge, might have observed, had he dropped his eyes over the parapet, a man about fifty years of age wearing a leather cap, and trousers and a waistcoat of coarse gray cloth, to which something yellow which had been a red ribbon, was sewn, shod with wooden sabots, tanned by the sun, his face nearly black and his hair nearly white, a large scar on his forehead which ran down upon his cheek, bowed, bent, prematurely aged, who walked nearly every day, hoe and sickle in hand, in one of those compartments surrounded by walls which abut on the bridge, and border the left bank of the Seine like a chain of terraces, charming enclosures full of flowers of which one could say, were they much larger:"these are gardens," and were they a little smaller:"these are bouquets."

当年如果有人经过小城韦尔农，走到那座宏大壮丽的石桥上去游玩（那座桥也许不久将被一道丑恶不堪的铁索桥所替代），立在桥栏边往下望去，便会看到一个五十左右的男子，戴一顶鸭舌帽，穿一身粗呢褂裤，衣衿上缝着一条泛黄的红丝带，脚上穿的是木鞋，他皮肤焦黄，脸黝黑，头发花白，一条又阔又长的刀痕从额头直到脸颊，弯腰，曲背，未老先衰，几乎整天拿着一把平头铲和一把修枝刀在一个小院里踱来踱去。在塞纳河左岸桥头一带，全是那种院子，每一个都有墙隔开，顺着河边排列，象一长条土台，全都种满花木，非常悦目，如果园子再大一点，就可以叫做花园，再小一点，那就是花畦了。

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。