查询词典 dislocations
- 与 dislocations 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Coracoidclavicle screw is a good method to treat fractures of the distal clavicle and dislocations of the acromioclavicular joint.
喙锁螺钉是治疗锁骨远端骨折和肩锁关节脱位的可*方法。
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The results show that the flow stress decreases with increasing deforming temperature and increases with increasing strain rate. The flow stress of the alloy during hot compression deformation can be described by constitutive equation in hyperbolic sine function with a hot deformation activation energy of 196.27 kJ/mol. Partial recystallization takes place in the alloys deformed at a high temperature or at a low strain rate, and large number of dislocations and subgrains are observed in the alloy. The elongated grains observed in the samples coarsen with increasing temperature and decreasing strain rate. Correspondingly, the subgrain size increases and the dislocation density decreases. The main soften mechanism of the alloy transforms from dynamic recovery to dynamic recrystallization.
结果表明:Al-Cu-Mg-Ag耐热铝合金在热压缩变形中的流变应力随着温度的升高而减小,随着应变速率的增大而增大;该合金的热压缩变形流变应力行为可用双曲正弦形式的本构方程来描述,其变形激活能为196.27kJ/mol;在变形温度较高或应变速率较低的合金中发生部分再结晶,并且在合金组织中存在大量的位错和亚晶;随着温度的升高和应变速率的降低,合金中拉长的晶粒发生粗化,亚晶尺寸增大,位错密度减小,合金的主要软化机制逐步由动态回复转变为动态再结晶。
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It is shown that the strengthening mechanisms came from many aspects, including the tension and compression of crystal planes, the bending and distortion of crystal lattices, the increase of dislocation density, the formation of cellular dislocations, the transformation of part of the residual austenites.
以300M超高强度钢为例,运用多种测试手段,如TEM、SEM、XRD以及金相分析技术,发现强化层组织中晶面的拉伸和压缩,晶格的弯曲和歪扭,位错密度的增高,胞状位错的形成,部分残余奥氏体向形变马氏体的转变等现象,在综合分析的基础上指出,位错强化是抗疲劳增寿的主要因素。
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The results indicate that there are high density dislocations in the matrix of the composite and the grain of the matrix is finer compared with that of the 6061Al.
结果表明,压铸法制备的Al18B4O33/6061Al复合材料中存在高密度的位错,同时复合材料基体晶粒细小。
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First, the physical models associated with dislocations and cracks are respectively converted to mixed boundary value problems in mathematics. Secondly, by using the Fourier transform, a dual integral equation for a crack and an algebraic equation for a dislocation can be derived from the boundary conditions relating with a crack and a dislocation, respectively. Solving these equations, exact analytical solutions can be obtained in terms of Bessel functions in close-form.
先把位错和裂纹的物理模型写成与它们相关的边值问题,然后,利用Fourier变换将这些边值问题化成一个对偶积分方程(对位错而言,得到一个代数方程),求解此对偶积分方程,可以获得以Bessel函数给出的封闭形式的分析解。
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The results were discussed in the terms of the model of geometrically necessary dislocations proposed to interpret the indentation size effect.
刷涂了有机硅涂层的316不锈钢在相同的条件下没有发生腐蚀,涂层对316不锈钢具有优异的防护作用。
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The novel is a study in multiple dislocations: Gertie must adjust from life in the country to the city, from self-sufficiency to interconnected dependency, from stability to the jarring vicissitudes of a booming city.
这部小说对多方面的混乱作了研究:格蒂必须调整自身,以适应从乡村生活到城市生活的改变,从自给自足到互联依赖的转变,从乡村的稳定到一个蓬勃发展的城市自身种种不协调剧变的变化。
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The main results of the investigation are as following:(1) Some important criteria for the design of multi-layer structure are acquired: the ratio of the layer thickness to the contact diameter should be controlled to a value about 0.8; increasing the number of the gradient layers and elasticity modulus of the top layer would benefit to the yield strength and the stress status at the interface.(2)By means of molecular dynamics simulations for a indentation and sliding process, it is discovered that dislocations of 45 direction to the surface occur in the surfaces layer, which is correspond to the direction of the plastic flows observed in the macroscopic continuous medium. The irreversible deformation caused by the dislocation and the atom piles at the surface are responsible for the irreversibility of the force response. They are also the main factors for the friction generation. The temperature and the indentation velocity have significant effects on the deformation behaviors of the material of the surface layer. The yield strength would increase obviously if the indentation velocity is greater than 10 m/s.(3)A method to evaluate the fracture toughness of coating by estimating the crack-density functionβof a Wicker''s indentation was proposed. Meanwhile a new surface treatment technology was developed using non-equilibrium plasma.(4)A MD-FE hybrid method and corresponding software was developed to analysis the tribological behaviors for multiplayer system.
研究主要内容和结果有:(1)得到指导梯度膜设计的几个准则:控制膜层厚度与接触半径比在0.8左右为宜;适当增加梯度层层数和顶层弹性模量,有利于提高抗屈服能力和改善界面处的应力状态;(2)通过对嵌入和滑动摩擦过程的分子动力学模拟,发现表层产生一个与宏观连续介质的塑性流动方向观测一致的45 方向位错;位错造成的不可逆变形和表面的原子堆积,是力的响应不可逆性的原因,也是构成摩擦力的主要因素;温度和嵌入速度对材料变形特性有显著的影响,当嵌入速度大于10 m/s时,屈服强度明显增加;(3)提出压痕裂纹密度系数β半定量判定膜层断裂韧性的方法;并开发出表面强化新工艺;(4)开发出分析表面摩擦学特性的MD-FE复合模拟方法和相应模拟软件。
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An agricultural program intended to help impecunious farmers and to remove what were alleged to be basic dislocations in the organization of agriculture ha:(ecome a national scandal that has wasted public funds, distorted the use of resources, riveted increasingly heavy and detailed controls on farmers, interfered seriously with United States foreign policy, and withal has done little to help the impecunious farmer.
意图救助贫穷的农民和消除被说成是农业组织中的基本性的混乱的农业计划,已经变成一种国家丑闻,浪费了公共资金,扭曲了资源的利用,逐渐转成对农民沉重和具体的控制,严重干涉了美联邦的对外政策;除此之外,几乎没有救助过贫穷的农民。
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Methods 8 cases of atlantoaxial fractures and dislocations were treated with Apofix lamina clamp internal fixation.
对8例寰枢椎骨折、脱位患者采用Apofix椎板夹固定。