解块

In this paper, the stress and strain fields of lithosphere in Himalayan Western Syntaxis orogenic belt and its adjacent areas since 10Ma are investigated through using the 3-D finite-element simulation, and deformation and evolution process in former 2Ma are simulated with different rheological parameters and rheological structure. Studies on functions in simulation process of different viscosity parameters, constitutive relation and changes of initial curst thickness show below results:(1) When various viscoelastic models are adopted, the selection of the coefficient of viscosity in the Western Syntaxis area has important influence on the its uplifts and evolutions. The computational results show that the viscosity in the Western Syntaxis area should be smaller than 1023Pa·s;(2) When the elastic model is adopted in relatively rigid Tarim basin, obvious changes are induced to the stress and strain fields of the whole Western Syntaxis area;(3) The existence of mechanical property stable block doesn′t make the propagation of the stress field show obvious decoupling phenomenon.

用数值模拟的方法探讨了自10 Ma以来喜马拉雅弧形造山带的西构造结及邻区岩石圈的形变和位移变化特征，并采用不同的流变参数和流变结构模拟了前2 Ma内的形变和应力场的演化过程，通过对不同黏性系数、本构关系和初始地壳厚度的改变在演化过程中所起的作用研究表明：（1）采用黏弹性模型时，西构造结区黏性参数的选取对西构造结及邻区隆升高度和隆升范围有重要影响，计算结果给出西构造结区地壳黏性系数应小于1023Pa·s；（2）相对刚性的塔里木盆地采用弹性结构时，对整个西构造结区域的应力和应变场均能引致明显变化；（3）力学性质稳定块体的存在并没有使应力场的传播出现明显的解耦现象。

The results show that the CNTs are dispersed effectively by bell jar immersing precast block casting. The maximal tensile strength and the elongation of the AZ31/CNTs composites are enhanced by 41.3% and 119.4%, respectively, and the elastic modulus and micro-hardness are also raised by 67.8% and 66.9%, respectively, when compared with those of the as-cast AZ31 Mg alloys. The CNTs can greatly refine the grains of the composites, playing a good role in reinforcing the matrixes of AZ31 Mg alloy. The fracture sections of the composites mainly consist of dimples and prisms, which demonstrates quasicleavage fracture modes.

结果表明：钟罩压块法可以有效地将碳纳米管分散到镁合金熔体中；CNTs对AZ31镁合金的力学性能有较强的增强效果，与本研究中的铸造AZ31合金相比，AZ31/CNTs复合材料的最大抗拉强度和伸长率分别提高41.3%和119.4%，弹性模量和显微硬度分别提高67.8%和66.9%；CNTs对AZ31镁合金基体晶粒的细化作用显著，与镁基体界面结合较好；复合材料试样断口形貌由韧窝和撕裂棱组成，呈现准解理断裂特征。

The results show that the CNTs are dispersed effectively by bell jar immersing precast block casting. The maximal tensile strength and the elongation of the AZ31/CNTs composites are enhanced by 41.3% and 119.4%, respectively, and the elastic modulus and micro-hardness are also raised by 67.8% and 66.9%, respectively, when compared with those of the as-cast AZ31 Mg alloys. The CNTs can greatly refine the grains of the composites, playing a good role in reinforcing the matrixes of AZ31 Mg alloy. The fracture sections of the composites mainly consist of dimples and prisms, which demonstrates quasi- cleavage fracture modes.

结果表明：钟罩压块法可以有效地将碳纳米管分散到镁合金熔体中；CNTs对AZ31镁合金的力学性能有较强的增强效果，与本研究中的铸造AZ31合金相比，AZ31/CNTs复合材料的最大抗拉强度和伸长率分别提高41.3%和119.4%，弹性模量和显微硬度分别提高67.8%和66.9%；CNTs对AZ31镁合金基体晶粒的细化作用显著，与镁基体界面结合较好；复合材料试样断口形貌由韧窝和撕裂棱组成，呈现准解理断裂特征。

After separating velocity parameters from hypocentre parameters, the introduction of an orthogonal projection operator has made the system of equations for hypocentre parameters consistent.

这就使得有可能通过台网的适当布局，获得地震定位的唯一解。在数值方面，本文还提出了利用矩阵的块结构采取顺序正交三角化的方法，减轻了内存的困难。

Considering of helical gear separate mesh and tooth-back shock, the non-linear vibration equitions of the system are also established, and the non-linear stable cycle solutions of the equitions are evaluated through dividing the timechanging stiffness matrics and dimension the equitions with selfadapt vary-step auto-RK4 numerical method.

考虑了斜齿轮传动的轮齿脱啮和齿后侧冲击，建立了系统的非线性振动方程，并通过对方程时变刚度阵的分块处理及无量刚化，用自适应变步长auto-RK4数值方法求出了系统非线性振动方程的稳态周期解。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。