This paper studied the yarn arrangement rules of two - step 3d braided prefoms with a combined rectangle section , and developed a computer aided design system for two - step 3d braiding with microsoft visual c + + 6 . 0 本文研究了任意矩形组合截面二步法三维编织的纱线布置规律，并在此基础上利用microsoftvisualc + + 6 . 0开发了一套二步法三维编织的计算机辅助设计系统。
The different methods presented above , especially tsf method and separating - variable method , are simple , efficient , robust and with boldness and ingenuity of conception . they all break through some key problems and difficulties in reconstruction technology of hyper - surfaces 上述诸方法，尤其是二步法和变量分离法，简单高效，构思新颖巧妙，突破了超曲面重构的难点和关键技术。
Making use of oxyen - acetlene mixed burn the torch produces high heat . after twice - through opertion spray - werkpiece . we first coat . then remelt in order to combine powder metalluegically . we may also heat large area workpiece before spraying prehwat . it guaring technology 100产品利用氧-乙炔混合燃烧产生的高热，对二步法喷焊工件进行喷粉后重熔，并可以对大面积喷涂工件进行喷前予热，保证喷涂喷焊工艺的进行。
In the 2 - step ops method , embryos were pretreated with 10 % eg + 10 % dmso for 30s before exposed to edfs30 , a vitrification solution , for 25s , then immersed in liquid nitrogen . the blastocyst rate of vitrified mouse morula after equilibration in 0 . 5mol / l sucrose for 5min was 100 % Ops二步法即胚胎预处理30s ，然后移入edfs30冷冻液中平衡25s冷冻保存，解冻后在0 . 5mol l蔗糖溶液中平衡5min ，培养后囊胚发育率为( 100 ) 。
The project was focused on several aspects as follows : 1 . the yarn arrangement rules of two - step rectangle 3d braided preforms were investigated on the purpose of coding easily . based upon it , we drew the rules of two - step 3d braided performs with a combined rectangle section 本课题的内容主要集中在以下几个方面： 1 、从有利于计算机编码的角度出发，研究了二步法方型三维编织的纱线布置规律，总结出了任意矩形组合截面下的纱线布置规则。
Two - stage - fitting ( tsf ) method is obtained , which consists of evaluating the function values of regular - grid points by using local weighted least square methods or radial function interpolation , and smoothly and quickly interpolating those points by using multivariate splines . the result is a hyper - surface of c1 or c : continuity 基于上述结果，提出了h - d空间散乱数据超曲面构造二步法，第一步应用局部最小二乘法或局部径向基函数拟合法插补立方体网格点上的函数值，第二步应用多元样条光滑快速插值计算，使所得超曲面具有c ~ 1或c ~ 2连续。
According to three dimension braided composites for braided technology - four - step and technology - two - step procedure , and with reference to theories of braided fabric geometry and force models , a geometric model is built . in this model , the cross - section of thread is described as a circle and thread path as a cubic b - spline . braided - fabric structures in three dimensions are displayed by using solid - modeling techniques 本文三维编织物根据四步法和二步法编织工艺，从纱线的力学模型出发，建立了以圆形近似描述纱线的截面形态，以三次b样条曲线近似描述纱线的屈曲形态的织物空间几何模型，利用计算机三维实体造型技术，分别建立各自的编织物实体模型，用来模拟织物内部各纱线的空间位置，完成织物结构仿真。
Results we constructed two model to evaluate the economic burden of disease of community inhabitants : model i ( total economic burden of disease = two step method calculating direct economic burden of disease + human capital method calculating indirect economic burden of disease + willingness to pay evaluating intangible loss ) and model ii ( total economic burden of disease = two step method calculating direct economic burden of disease + willingness to pay method calculating indirect economic burden of disease + willingness to pay evaluating intangible loss ) 结果构建评价社区居民疾病经济负担的两个模型：模型(总疾病经济负担=二步法直接经济负担+人力资本法间接经济负担+支付意愿法无形经济负担)和模型(总疾病经济负担=二步法直接经济负担+支付意愿法间接经济负担+支付意愿法无形经济负担) 。
