薄板的

The specimen laser cutting experiments show that it is feasible to cut thin quartz glass plates pricisely with laser cutting technique with accuracy of better than 20μm and central symmetry of less than 3m.

对石英玻璃薄板的激光精密切割进行了实验验证，实验结果表明，激光精密切割技术能够较好地运用于石英玻璃薄板的精密切割加工中，其加工精度优于20μm、中心对称度小于3μm。

As application of generalized displacement solution, many problems of stability for rectangular plates are worked out, and the characteristic equation is given by it. The result can be?a reference for engineering.

本文应用弹性矩形薄板稳定问题的广义位移解求解了一系列矩形薄板的稳定问题，给出了相应问题确定临界载荷的特征方程及计算结果，为工程中薄板的设计计算提供了有效的参考。

The equations of a high-speed rotating plate are obtained using Jourdain＇s velocity variation principle and the finite element method and MTA are used for discretization.

基于Jourdain速度变分原理，先推导出做高速旋转薄板的动力学连续变分方程，再用有限元法对柔性薄板进行离散。

Then, the equation was changed into the standard form of the Mathieu equation using Galerkin method.

首先在载流薄板的磁弹性非线性运动方程、物理方程、几何方程、洛仑兹力表达式及电动力学方程的基础上，导出了载流薄板在电磁场与机械荷载共同作用下的磁弹性动力稳定方程，然后应用Galerkin方法将稳定方程整理为Mathieu方程的标准形式，并将薄板的动力稳定性问题归结为对Mathieu方程的求解。

Based on the magnetic-elasticity nonlinear kinetic equations, physical equations, electrical kinetic equations and the expression of Lorentz forces, the magnetic-elasticity kinetic buckling equation of a current-carrying plate applied mechanical load in a magnet field were derived. The equation was transformed into the standard Mathieu equation by using Galerkin method. Thus, the magnetic-elasticity kinetic problem was changed into a problem of solving the Mathieu equation.

在载流薄板的磁弹性非线性运动方程、物理方程、洛仑兹力表达式及电动力学方程的基础上，导出了载流薄板磁弹性动力屈曲方程，并应用Galerkin原理把屈曲方程整理为Mathieu方程的标准形式，将载流矩形薄板在电磁场与机械荷载共同作用下的磁弹性屈曲问题归结为对Mathieu方程的求解问题。

Based on the magneticelasticity nonlinear kinetic equations, physical equations, electrical kinetic equations and the expression of Lorentz forces, the magneticelasticity kinetic buckling equation of a currentcarrying plate applied mechanical load in a magnet field were derived. The equation was transformed into the standard Mathieu equation by using Galerkin method. Thus, the magneticelasticity kinetic problem was changed into a problem of solving the Mathieu equation.

在载流薄板的磁弹性非线性运动方程、物理方程、洛仑兹力表达式及电动力学方程的基础上，导出了载流薄板磁弹性动力屈曲方程，并应用Galerkin原理把屈曲方程整理为Mathieu方程的标准形式，将载流矩形薄板在电磁场与机械荷载共同作用下的磁弹性屈曲问题归结为对Mathieu方程的求解问题。

Using the characteristic of the regular curve boundary for a bending plate in engineering,the analytic integral formulae of assistant states in boundary element method with the linear element for a Kirchhoff circular plate are introduced and the systematic equation of BEM is established in this paper.

利用一般弯曲薄板边界为规则曲线的特点，对工程常用的圆形弯曲薄板，采用线性单元，导出K irchhoff圆板各辅助态的边界积分解析表达式，建立问题的边界元法系统方程，从而使薄板的边界元分析完全避免通常使用的高斯积分，明显提高计算精度。

The improvements of modification with two kinds of machines were all obvious, but the modification with steam press machine was better. The dimensional stability of former was better, and thickness swelling rate was only the half of the TS of thick veneer, which was treated with ordinary press machine.

通过两种压机对薄板压缩增强改性的比较，结果表明杉木薄板改性材的强度都有明显的提高，其中利用密封蒸汽压机处理，改性材尺寸稳定性较好，其吸水厚度膨胀率比普通压机压缩改性薄板的TS小50%。

The forming process and the characteristics of plastic deformation, the sites of the heavily strained zones with severe thickness reduction and their evolution, the influences of the main processing parameters, such as the plastic melt pressure and its distribution from the gate to the end of the mold, and of friction coefficient between the sheet flange and the mold, on these during the hybrid forming of the aluminum sheet have been revealed by the updated Lagrange finite element formulation for the finite elastic-plastic deformation.

运用弹塑性大变形更新的Lagrange有限元方法，揭示了铝薄板的成形过程和塑性变形的特点与规律、大塑性变形区的产生位置及其塑性变形特点，探明了复合成型过程中塑料熔体压力及其分布规律以及铝薄板凸缘与模具摩擦系数等主要工艺参数对铝薄板成形过程和塑性变形的影响规律。

The thickness of shell element is design variable.

本文问题的提法是假设薄板的厚度给定，壳单元的厚度为设计变量，给定约束和荷载的条件下，求加强筋在薄板上布置的几何形状，使薄板结构使用材料最省，满

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。