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Original cracks are obtained by directional fracture with the slotted cartridge. This paper discusses the normal law and mode of crack propagation and analy...

研究了爆炸载荷下的裂纹起裂、发展和止裂的动态扩展行为,分析了其破坏模式、动态应力强度因子及裂纹扩展速度

In this thesis, we study Cauchy rational interpolation problem on the set of distinct nodes by algebraic method and give some algorithms in univariate and multivariate cases.

我们推广了有理插值问题解的概念,给出了扩展弱解,弱解和解的定义,并且说明在给定一个代数结构后扩展弱解集构成一个线性空间。

Image schema transformation motivates the meaning extension from the central meaning to other spatial meanings,which in turn are mapped onto quantity,state and social domains by conceptual metaphor.

典型意义通过意象图式转换,扩展成其它空间意义,而每项空间意义又通过概念隐喻,由空间域映射到数量、状态、社会等抽象域,方位词就有了用于不同的认知域的不同而又有联系的义项,形成了一条由典型意义为中心向外扩展的语义链。

Based on the depth research on extension array manifold of uniform circular, for some uniform circular arrays which had subarrays with the nature of rotational invariance and had the nature of central symmetry two ESPRIT algo-rithms were presented, the first algorithm reduced one time of SVD, the second algorithm avoided parameter pairs.

在深入研究均匀圆阵扩展阵列流形的基础上,针对某些均匀圆阵的扩展阵列中含有旋转不变性的子阵列组以及中心对称性质,提出了2种基于均匀圆阵的二维ESPRIT算法,第一种算法减少了一次奇异值分解,第二种算法避免了参数配对。

In view of the complexity of the function of mechanical products, the functional characteristic model and the knowledge library of function parameters were established. Through the function parameter mutation operation, then function and structure of products were modified and generated.

在对机械系统组成进行分析的基础上,建立了功能特征扩展和功能参数知识库模型,运用变功能参数操作,实现了产品功能的组合、变异和扩展,并使得产品结构相应的发生改变和重构,从而达到产品创新设计的目的。

Based on this thought, in this thesis, the alternation theorem is first extended to the Chebyshev approximation problems with inequality constraints, and then two algorithms are devised for designing linear phase FIR filters with inequality constraints in Chebyshev sense according to the extended theorem.

L.J.Karam和McClellan在文献[20]中把交错点组定理扩展到复数域,并提出了求解复系数FIR滤波器的复Remez算法,但由于此扩展定理只是一个充分条件,所以此算法不能保证得到最优解。在文献[23]中,他们对复Remez算法进行了完善,使其收敛到最优解。

DSP is to handle core with TMS320C31 , adopt CPLD to realize outer-ring expanding circuital movie selections , is interrupted and control, include change , many string passage and the outside memory expansion of AD.

以TMS320C31 DSP为处理核心,采用CPLD实现外围扩展电路的片选、中断以及控制,包括AD转换、多串口通道和外部存储器的扩展

It is well known that the multi-value CDMA spreading codes can be designed by means of a pair of mirror multi-rate filter-banks based on some optimizing criteria. The dissertation indicates that there exists a theoretical bound in the performance of its circular correlation property, which can be described by an explicit expression.

研究了基于两带镜像多速率滤波器组来设计的多值CDMA扩展码的方法,并推导出了基于这种方法设计的码序列在循环相关特性方面所能达到的极限,以及达到此理论极限时应满足的条件;在此基础上,提出了一种基于熵最大化准则来产生CDMA扩展码的设计方法。

The number of sectors is extended from 22 to 39 to be adapted to China status, as well as the demand functions. The circular economy is also considered to make the mathematical energy description more close to the reality as the resource saving and comprehensive reclamation are being advocated.

将模型原来的22个部门扩展到适合我国国情的39个部门,相应地扩展了部门需求函数;考虑到我国近年来大力提倡提高能源资源的综合利用率,模型中增加了循环经济函数,使模型中有关能源资源开发利用的数学描述更接近实际;使用混合型投入产出表技术实现了各能源品种在物质量和价值量上的一致性,为模型的优化计算奠定了基础。

On the basis of the expansion coefficient, the luminance range expansion process is performed on the image data.

根据该扩展系数,对图像数据进行亮度范围扩展处理。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。