屈曲的

Simulation result of the experiment shows that unloading and recovery process of PTCS is not consistent with the local stress redistribution and concentration.It can be divided into four phases:1.local stress unloads first in the middle of PTCS;2. stress continues to unload near the incident bar.3.Stress continues to unload near the transmission bar,the first and second layer PT buckling rumple disappear;4.the whole PTCS vibrates elastically.

对具体冲击实验的数值模拟结果表明：相变柱壳的卸载恢复过程在柱壳结构中是不均匀的，伴随着壳体局部应力释放和局部应力集中，可以分为以下四个阶段：1、柱壳中部发生弯曲变形的壳体应力首先释放，2、靠近入射杆端的壳体应力继续释放，3、靠近透射杆端的壳体应力释放，第一层与第二层相变屈曲皱褶消失，4、柱壳整体弹性振动。

In better times, he'd have spent more than an hour preflighting this jet-powered beauty, if only to remember every nook, all the smells of the engine, the leather seat, the curvature of the glass, and the high-powered shriek of the jets spooling up.

在比较好的时代中，他有已经度过超过 1 小时起飞前的喷射机美人有力量的，如果不料竟会向上记得每个角落，引擎的所有味道，皮革座位，玻璃的屈曲和喷射机周边同作的精力充沛的尖锐响声。

When developing the flexure formula we imposed a condition that the cross-sectional area be symmetric about an axis perpendicular to the neutral axis; furthermore, the resultant internal moment M acts along the neutral axis.

当发展我们强加了一种情况代表性的区域是对称的有关对中立的轴轴垂直线的事屈曲公式的时候；此外，合量内在的片刻 M 沿着中立的轴行动。

Based on the research of the predecessor's production and the theoretic study, and establishs a mechanics and mathematical model of the horizontal well testing string and optimizes the composition and parts of the testing string. And the plunger effect, spiral bending effect, temperature effect and tympanites effect of the pipe string-packer system are analysed. At the same time, both the model of thermal field and pressure field are studied in accordance with technical peculiarity on site.

本文通过对前人研究成果的调研，建立了水平井测试管柱的力学模型和数学模型，并对测试管柱的结构及配件进行了优化；建立了管柱-封隔器系统的活塞、螺旋屈曲、温度和鼓胀四种基本效应的模型，同时也根据现场工艺特点建立了温度场和压力场的分布模型。

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。

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。

Methods: The hook test was performed by a single surgeon in a cohort of 45 patients undergoing surgical exploration of the distal biceps tendon. While the patient actively supinates with the elbow flexed 90°, an intact hook test permits the examiner to hook his or her index finger under the intact biceps tendon from the lateral side. With an abnormal hook test, indicating distal avulsion, there is no cord-like structure under which the examiner may hook a finger.

一名外科医生对一组45例远端二头肌腱外科手术探查的患者进行了牵引钩试验，当患者肘关节屈曲90度上肢主动旋后时完整的牵引钩试验检查者在完整的二头肌腱侧面可以钩住他或她的食指，而异常的牵引钩试验表明远端撕裂，那里没有索状的结构使检查者可以钩住他的手指。

In order to research the ship ultimate strength, the ultimate strength of stiffened panel must be considered. And the web buckling and the stiffener tripping are the two main failure forms of stiffened panel. Based on the two main failure forms in this paper, according to the six failure modes of stiffened panel, the ultimate strength is solved by programming, and the failure mode is presented.

船体梁可近似看作是由加筋板组成的薄壁箱型结构，要研究船舶的极限强度，必须考虑加筋板的临界应力，而腹板屈曲和扶强材侧倾是加筋板的两种主要失效模式，本文在分析这两种失效模式的基础上，根据加筋板的六种失效模式，编程求解加筋板的临界应力，并给出其失效模式。

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。