屈曲

Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,代写医学论文,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.

本文对于冷冲压技术的分类、特点及发展方向作了简略概述；论述了冲压零件的形成道理、基本生产模型结构与运动历程及其设计道理；对于典型的冲压件生产模型进行了设计：大直径三通管冲压复合模设计盖世了大直径三通管的加工难题、带有浮动凸凹模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、消音器后补碗落料、拉深、冲孔、翻边复合模设计、一模两件落料拉伸冲孔翻边复合模设计、环形屈曲件的生产模型设计、铰链卷圆成形工艺及生产模型设计、半自动送料切角装置设计、滑板式送料拉深、冲孔、翻边模设计实现自动送料、长管多孔冲模设计、带凸缘台阶方盒形零件拉深模以及盒形件侧壁孔眼翻孔模。

With the length increasing, elbow or knee joint may have inflexion and contracture.

随着长度增加，可出现肘、膝屈曲挛缩。

Compared with general structures, since for beams and cylindrical shells, the geometrical equations are mostly simplified in forms, so their bucklings are playing an important role in the structural stability, which have increased great developments in the theories of structural stability.

圆柱壳是工程中最常使用的结构形式，从某种意义上来说，对这类结构屈曲问题的研究，推动了结构稳定性理论的发展。

Results 20 cases of patients with single-slice spiral CT scan images knee-buckling slope clearly shows the sharp ridge between the condyles,and the central base,and so on in different parts of cortical bone fracture.

结果：20例患者单排螺旋CT膝部屈曲斜面扫描图像清晰的显示了髁间嵴尖部、中央及基底部等不同部位骨皮质断裂。

Results showed that the ductility of bolt spjice is much better than welds, weaker splice joints develop larger plastic deformation, slipping between faying surfaces, bearing of bolts to hole surfaces and buckling of splicing plates are all ideal energy dissipation mechanism.

试验结果表明：螺栓拼接节点的延性远好于梁柱焊缝连接；较弱的拼接节点产生较大的塑性变形；接触面的滑移、螺栓与孔壁的挤压和翼缘拼接板的屈曲都具有良好的耗能能力。

Results showed that the ductility of bolt splice is much better than welds, weaker splice joints develop larger plastic deformation, slipping between faying surfaces, bearing of bolts to hole surfaces and buckling of splicing plates are all ideal energy dissipation mechanism.

试验结果表明：螺栓拼接节点的延性远好于梁柱焊缝连接；较弱的拼接节点产生较大的塑性变形；接触面的滑移、螺栓与孔壁的挤压和翼缘拼接板的屈曲都具有良好的耗能能力。

The failure mode of honeycomb fibreboard was analyzed from the structure of honeycomb fibreboard and mechanical aspects.

从蜂窝纸板的结构和力学角度分析了蜂窝纸板的破坏模式、纸蜂窝芯的压缩破坏过程和蜂窝胞壁壁板受载破坏机理，得知蜂窝纸板的压缩破坏主要与纸蜂窝芯的结构和蜂窝胞壁的屈曲有关，为蜂窝纸板缓冲性能的研究提供了理论基础。

Other parameter such as the angle of initiative flections, blood loss at 6 h post operation, the concentration of serum hemoglobin at 24 h, 48 h and side effect were recorded.The VAS pain scores during test had no significant difference between two groups.

记录术后6 h、12 h、24 h、48 h静息状态和术后24 h、48 h持续被动运动训练时VAS疼痛评分；观测术后12 h、24 h患肢主动关节屈曲角度；记录术后6 h储血罐内的引流量及术前、术后24 h、48 h血红蛋白浓度及副作用的发生率。

The interfaces between Al2O3 film and Al-alloy substrate are supposed to be in a perfect state, and the flaw effect in Al2O3 film is also ignored. A finite element software (ANSYS 8.0) has been adopted to analyze the thermal flections distortion of Al2O3 films with (5-30)μm thickness.

假设薄膜和基体界面处于理想结合状态下，且不考虑薄膜中缺陷的影响，采用有限元软件(ANSYS 8.0)分析了(5~30)μm厚氧化铝薄膜／铝合金基体系统中的热屈曲变形。

First and maximal passive and active knee flexions at 24 and48 h were significantly more extensive in the gabapentin thanin the control group.

加巴喷丁组在24和48小时的首次和最大膝关节屈曲度比对照组大。

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。