模

The innovation of our thesis lies in:1 We do not require quadratic space to have hyperbolic basis. Moreover, we only require M to be projection module instead of free module;2 Eichler transformation is used instead of the traditional matrix transformation in our proof;3 Not only do we extend the relative results obtained by Bak and Vavilov and the results obtained by Vaserstein and You hong , we also simplify the proof significantly.

我们的创新之处在于： 1 不要求二次型空间具有双曲基，甚至不要求M是自由模，而仅要求M是投射模； 2 我们在论证中使用的是Eichler变换而不是传统的矩阵； 3 我们的结果不仅推广了Bak与Vavilov以及Vaserstein与游宏的相应结果，而且论证也极大地简化了。

Put forward a new method by transforming the second-order hyperbolic equationinto a first-order system of equations and derived the H_0~1 -norm and the L~2 -norm error estimates.

12提出一种新方法，通过转化双曲型方程中二阶时间导数项得到关于一阶时间导数的耦合方程组，然后进行离散，得到一个两层交替方向有限元格式，并得到H_0~1-模和L~2-模误差估计。

The state variables are proved to be able to hit the switching hyperplane and its requirement is discussed based on Lyapunov stability criterion.

基于Lyapunov理论证明了所设计的控制器是滑模可达的，并给出了滑模可达条件。

Modal parameter identification ERA method of source code, The method can be used for environmental inspired modal parameter identification.

模态参数识别ERA方法的源代码，可利用该方法进行环境激励下结构模态参数识别。

Given the incompressibility of water, a relation between specific elastic storage, compressibility modulus and deformation modulus was inferred by applying current related formulas.

主要完成了如下工作：(1)在假定水不可压缩的情况下，利用已有的相关公式推导了单位弹性释水系数与土层压缩模量、变形模量之间的关系。

It takes advantages of AR-quiver analysis and APR- tilting translation. We proved: if T_A is a tilting A-module over a path algebra of type A_n or a characteristic tilting A-module over a path algebra of type D_n,E_6,E_7, E_8,then there are points corresponding indecomposable direct summands of T_A in theτ- orbit of each edge.

通过对Dynkin型路代数的AR-箭图分析及利用APR-倾斜变换，证明了A_n型路代数倾斜模及D_n，E_6，E_7，E_8型路代数本性倾斜模T_A的一个必要条件是，在A的AR-箭图Γ_A的边缘的r-轨道都有T_A的不可分解直和项对应的点。

In the course of this machine is very often, and the indentation, which decided to die.

在模切的过程中很多时候是和压痕一起进行的，这决定于模切版。

Then, the concept of error index for a given mode and the concept of damage indicator for all available modes were deduced.

摘 要：本文基于模态应变能的概念，给出了基于前两阶振型模态参数的结构损伤定位方法。

The zero-sequence current will change when the inductance of arc-suppression coil is changed.

该方法通过改变消弧线圈电抗值，从而引起线路上各点的零序电流模值发生变化，根据零序电流模值的变化特性来判断故障位置。

Department of Industrial Equipment and Control Engineering, South China University of

本文中对充模过程中模腔内空气的状态变化情况进行了计算，通过对计算结果的分析，说明制品缺陷产生的原因和排气槽参数选择的原则。

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。