纯拉力

In the test model, a new type joint connection of one-way hinge is put forward for achieving pure-hinge connection; In the shape forming test, because of the little post-tensioning forces, a new type loading method of twisting nut for drawing wire is put forward in stead of jack tensioning for solving the questions, such as super-tensioning and the nonuniform rate of loading; In the loadtest, a new type vertical loading system of multiple-point fixed pulley is put forward for solving the questions, such as more loading points and larger vertical force at one loading point.

试验模型中，为了实现纯铰接连接，提出了一种新型的单向铰节点连接形式；成形试验中，由于后张拉力较小，提出了一种新型拧螺母抽钢丝的加载方法，很好的解决了千斤顶易超张拉和加载速率不均匀等问题；承载力试验中，为了解决加载点较多、单点加载较大的问题，提出了一种新型多点定滑轮竖向加载系统。

In the test model, a new type joint connection of one-way hinge is put forward for achieving pure-hinge connection; In the shape forming test, because of the little post-tensioning forces, a new type loading method of twisting nut for drawing wire is put forward in stead of jack tensioning for solving the questions, such as super-tensioning and the nonuniform rate of loading; In the load test, a new type vertical loading system of multiple-point fixed pulley is put forward for solving the questions, such as more loading points and larger vertical force at one loading point.

试验模型中，为了实现纯铰接连接，提出了一种新型的单向铰节点连接形式；成形试验中，由于后张拉力较小，提出了一种新型拧螺母抽钢丝的加载方法，很好的解决了千斤顶易超张拉和加载速率不均匀等问题；承载力试验中，为了解决加载点较多、单点加载较大的问题，提出了一种新型多点定滑轮竖向加载系统。

There is much difference between the stress ratio in crown and springe calculated with these two methods. In the crown, most external forces changing into horizontal forces leads to the large decrease of the vertical tension stress. The vertical distribution pattern of the axial forces in the arch and soil pressure is not the same. And near the bottom of the pit the axial tension stress appears. Due to the self-accommodation effect which the external force acts on the arch, the stress in the springe gets lesser too.

拱冠和拱脚处的应力比值跟竖向构件比较相差悬殊；拱冠处由于大部分外力转化为水平拱内轴压力而使得竖向拉应力大大减小；竖向上拱内轴力与土压力的分布模式并不相同，并且在坑底附近出现了轴拉力；拱脚处也由于拱体对外力的自我调节作用而变得比纯竖向构件小的多。

The series of rolls of paper for pure bamboo pulp and paper, the characteristics of cleanliness are high, good gloss, high strength, good evenness, wrinkles delicate, soft, comfortable, ash-free and tasteless, with a rally good, strong water absorption characteristics.

各系列卷纸为纯竹浆纸，特点是洁净度高、光泽好、强度高、匀度好、皱纹细腻、柔软舒适、无灰无味，具有拉力好、吸水力强的特点。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。