合段

A new curvature-based algorithm in free-form curve fitting was proposed to fit a 2D NURBS profile with an arc spline ,where a new form of curvature formula with matrix representation was also proposed,and then the arc spline tool path with G~(1) continuity was generated.

给出了一种平面曲线轮廓的圆弧样条拟合及刀具路径生成算法，该算法面向零件轮廓的光顺性刀具路径生成，通过应用曲线的曲率关系，对以NURBS表示的被拟合自由曲线按参数递增的方向用G1连续的圆弧或直线段逐段拟合，并生成相应的圆弧样条刀具路径，从而实现零件曲线轮廓表面的光顺加工。

Test and analysis show that, the distribution patterns of the tangent veloctiy fields in the big cone area and the small cone area, which are comprised of para-free vortex and para-forced vortex, are basically identical without a change of the radius of the boundary surface; with the increase of the angle of the small cone, the para-free vortex area decreases and the para-forced vortex area increases, and the emulsifiability of the fluid drips increases with the increase of velocity gradient; the tangent velocity increases with the increase of inlet flow, and the maximum tangent velocities of both the big cone area and the small cone area are 4.94 times of the inlet flow; and the maximum tangent velocity increases with the increase of the split ratio and with the radius of the boundary surface not changed.

试验分析表明，大锥段和小锥段切向速度分布规律基本相同，均由准自由涡和准强制涡构成，分界面半径rm没有变化；随着小锥角θ的增加，准自由涡区缩小，准强制涡区扩大，速度梯度增加会加大液滴的乳化程度；随入口流量增加，切向速度增大，经拟合得出大锥段和小锥段的最大切向速度均为入口流量的4.94倍；分流比加大，分界面半径基本不变，最大切向速度增加。

During the BVs come from the section off the encephalon to the subdural section, the SMC phenotype diversion from synthesis phenotype to shrink phenotype. The function of BVs of different sections in the regulation and control cerebral outflow may be distinct.

桥静脉近脑段至硬膜下隙段，SMC含量逐渐降低，SMC从合成型逐渐转向收缩型，不同段的桥静脉管壁内的SMC在调控脑静脉血回流中作用不同。

As the cam profile with constant-velocity-constant-acceleration ramp feature and with continuous higher derivative lift feature is widely adopted in the advanced high-speed internal combustion engines, the cam ramp profile is fitted with a reasonable function and the cam-lift profile is fitted with a polynomial function.

考虑到高速内燃机的凸轮大多采用具有等加速-等速特征的缓冲段和高阶导数连续特征的工作段型式，用等加速-等速函数拟合缓冲段实测升程数据，用整体式高次多项式函数拟合工作段实测升程数据。

Any man of mine better be proud of me even when i'm ugly he still better love me and i can be late for a date that's fine but he better be on time any man of mine'll say it fits just right when last year's dress is just a little too tight and anything i do or say better be okay when i have a bad hair day and if i change my mind a million times i wanna hear him say yeah, yeah, yeah, yeah, yeah i like it that way any man of mine better walk the line better show me a teasin' squeezin' pleasin' kinda time i need a man who knows, how the story goes he's gotta be a heartbeatin' fine treatin' breathtakin' earthquakin' kind any man of mine well any man of mine better disagree when i say another woman's lookin' better than me and when i cook him dinner and i burn it black he better say, mmmm, i like it like that yeah and if i change my mind a million times i wanna hear him say yeah, yeah, yeah, yeah, yeah i like it that way any man of mine better walk the line better show me a teasin' squeezin' pleasin' kinda time i need a man who knows, how the story goes he's gotta be a heartbeatin' fine treatin' breathtakin' earthquakin' kind any man of mine let me hear you say yeah, yeah, yeah, yeah, yeah i like it that way any man of mine better walk the line better show me a teasin' squeezin' pleasin' kinda time i need a man who knows, how the story goes he's gotta be a heartbeatin' fine treatin' breathtakin' earthquakin' kind any man of mine you gotta shimmy shake make the earth quake kick, turn, stomp, stomp, then you jump heel to toe, do si do 'til your boots wanna break 'til your feet and your back ache keep it movin''til you just can't take anymore come on everybody on the floor a-one two, a-three four hup two, hum if you wanna be a man of mine, that's right this is what a woman wants...

any man of mine 这是一个女人想要的…我钟意的男人最好以我为豪即使我丑得可以他最好照样爱我我约会迟到没什么大不了但他最好给我准时我钟意的男人该说正合身当去年的裙子不过略显紧了些我怎么发牢骚出怨气都行当我哪天走了霉运如果我改变主意千千万万次我要听到他说对，对，对，对，对，我就喜欢那样我钟意的男人最好别找麻烦最好秀我一段兴奋甜蜜惬意的时光我需要一个男人，懂得爱情的进程他得是那种让人心跳不止温柔体贴另人窒息惊天动地的那种我钟意的男人我钟意的男人最好否认当我说别的女人长得比我漂亮而当我为他做饭却烧糊了他最好说，恩，正合我的胃口如果我改变主意千千万万次我要听到他说对，对，对，对，对，我就喜欢那样我钟意的男人最好别找麻烦最好秀我一段兴奋甜蜜惬意的时光我需要一个男人，懂得爱情的进程他得是那种让人心跳不止温柔体贴另人窒息惊天动地的那种我钟意的男人让我听到你说对，对，对，对，对，我就喜欢那样我钟意的男人最好别找麻烦最好秀我一段兴奋甜蜜惬意的时光我需要一个男人，懂得爱情的进程他得是那种让人心跳不止温柔体贴另人窒息惊天动地的那种我钟意的男人你得可以震撼人心可使地动山摇踢腿，转身，蹬地，蹬地，然后跳步脚跟到脚尖，多西多直到跳破靴子直到脚酸背痛别停下直到你实在跳不动来吧所有站着的来-一二，来-三四来，二，来如果你想成为我钟意的男人，就这样这是一个女人想要的

During building 2D model, I use the concepts of point, segment, line and plane, the segment can be formed from points, then line can be formed from segments, the closed curved plane can be obtained by around lines, and finally the 2D model can be built by closed curved plane; I express the un-smooth stratum or fault by linear fitting and express the smooth stratum or default by cubic spline fitting segmentally, in this way I can describe the variation feature of 2D interface properly.

在二维建模中，引用点、段、线、面的概念，即由点形成段，由段形成线，由线围成封闭面，封闭面构建成二维模型；对表示二维地层和断层的界面线，用线性拟合表示非光滑性地层或断层面，用分段三次样条拟合表示光滑性地层或断层面，恰当地表达了二维界面的变化特点。

A series of polyether based polyurethaneurea aqueous dispersions with well-defined hard segments were prepared by fractional steps with polyether polyol, 4,4'-diphenylmethane diisocyanate, dimethylolpropionic acid, 1,4-butanediol, isophorone diisocyanate and ethylenediamine.

以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1，4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段，聚醚多元醇为软段，通过分子设计采用分步合成法，制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲水分散液。

A series of polyether based polyurethaneurea aqueous dispersions with well-defined hard segment s were prepared by fractional steps with polyether polyol, 4,4′-diphenylmethane diisocyanate,dimethylolpropionic acid,1,4-butanediol,isophorone diisocyanate and ethylenediamine.

以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1，4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段，聚醚多元醇为软段，通过分子设计采用分步合成法，制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲水分散液。

Adding a small quantity of three functional group of polyvalent can improve the water resistance and decoration of copolymer emulsion after film forming. The structure form of interpenetrating networks has a greater destroy degree to the micro crystal of polyurethane film forming substance than the effect of the prepolymer capping graft copolymer.IV, This article studies on the heat stability of acrylate modified polyurethane dispersion, researches the changes of the structure of acrylate modified polyurethane dispersion afterheating, and analyses by the heat analysis, infrared ray and heat analysis, and mass spectrometery.

利用拉曼光谱和扫描电镜、红外光谱等测试技术，分析了丙烯酸酷及丙烯酸酷一有机硅等改性聚氨酷水分散体的成膜过程—利用预聚体封端技术合成的丙烯酸酷改性聚醚聚氨酷的成膜过程包括乳液颗粒的挤压成膜与分子硬段的微区结晶，有机硅氧烷的引入将同时出现硅氧烷的水解缩合；具有互穿网络结构的丙烯酸酷改性聚氨酷水分散体因丙烯酸酷的互穿而限制了聚氨酷硬段在成膜过程中的结晶，聚合物成膜以挤压成膜为主，有机硅的复合改性同样出现硅氧烷水解缩合现象。8。

This production line is composed of filling section, cleaning and drying section, conveying section, light inspection positioning section, automatic plate bonding section, long-journey plate pressing section and automatic discharging turning section.

该生产线由进料段、清洗干燥段、传送段、灯检定位段、自动合片段、大行程板压段、自动出料翻转段等部分组成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。