结构单元

Through the comprehensive analysis and in vestigation of the geological structure at well Pecan-I area, it was pointed out that the structural conditions in Nanchang Seg are simpler than those in its peripheric regions, belonging in an independent layer block structural unit controlled by the slip sheet and dip-slip structures since Late Triassic.

通过对鄱参1井区地质结构的分析和综合研究，提出南昌凹陷是从晚三迭世以来受层滑倾滑构造控制的一个独立层块构造单元，构造较周边简单。

The results show that single beam element can be used to simulate the spot weld in the finite element model of vehicle body, which offers a help to the structure analysis and design of vehicle body.

结果表明，单个梁单元可用于模拟车身模型中的点焊连接，为车身的结构分析及设计提供了有力支持。

According to structural characteristics of floating slab tracks, a track segment element was taken between two adjacent fasteners. For each element, rails were regarded as Euler beams supported by discrete viscoelastic supports. The fasteners and rubber supports were replaced by a linear spring and damp. So the vibration model of the floating slab track was established. In constructing vibration model of a metro train, each car of the metro train with two suspensions was modeled as a multi-rigid body system, in which rigid bodies were connected with each other by a linear spring and damp. Combining the potential energy of vertical vibration of the track with that of the metro train, the total potential energy of vertical vibration of the train and track was obtained. And then, the matrix equation of vertical vibration of the system was established using the principle of total potential energy with stationary value in elastic system dynamics and the "set-in-right-position" rule for formulating system matrices. The vibration responses of the system can be obtained by solving the matrix equation with the direct time integration such as Wilson-θ method.

摘 要：针对浮置板式轨道结构特点，取相邻2个扣件之间的轨道为1个轨段单元，钢轨视为连续弹性点支承Euler梁，浮置板视为弹性薄板，扣件系统及橡胶支座均模拟为线性弹簧及粘滞阻尼器，建立浮置板式轨道振动模型；将城轨列车中的车辆均离散为多刚体系统，各刚体之间通过线性弹簧及粘滞阻尼器相连，建立列车振动模型；将浮置板式轨道及列车振动势能叠加，得到系统竖向振动总势能；基于弹性系统动力学总势能不变值原理及形成系统矩阵的"对号入座"法则，建立此系统竖向振动矩阵方程；采用Wilson-θ逐步积分法求解此矩阵方程，得出此系统竖向振动响应。

About the structure design, the design theorem about the micro injection molding device was: based on the traditional injection molding machine, through creative designed the plastic injection mold, set a micro capacity control and injection molding module on the hot runner mold.

关于结构设计方面，微注射成型装置设计原理是在传统注射机的基础上，通过注塑模具的创新设计，在热流道模具上加装微量控制注射单元。

In SNA,a value in the element address field of the network address identifying a particular resource within a subarea.

在IBM系统网络体系结构中，标识一个子区内指定资源的网络地址的单元地址字段中的一种取值。

Now HLS has absorbed much research attention in IC-CAD field. In HLS, algorithms represented by algorithm description language are transformed into hardware structure description consisted of resisters and transfers. In the transforming process, synthesis of datapath is a core. The other works is based on it. And in the synthesis of datapath, operation scheduling, functional unit allocation and binding all are NP-Completeness problems. The structure of their solution space is not known well. If we must find a global optimum solution, we can only use exhaustion. This way needs too much computation for VLSI synthesis, and is impractical in Industry. So usually heuristic algorithms are used to search suboptimum solution.

因此HLS成为国际IC-CAD学界的一个热门，它把算法描述语言表达的算法转换为用寄存器、传输器描述的硬件结构，其中以数据通路的综合为主体，其余工作皆以此为基础；而在数据通路综合中，操作调度、功能单元分配、连线等均属NP问题，目前该问题的解空间尚未充分了解，如要求得最优解，只有采取穷举搜索法，对于大规模集成电路而言运算量太大，工业中无法承受，故通常都采用启发算法求次优解。

One classification of Double Chain is based on the assumption, i.e., the angulated elements of Double Chain subtend a constant angle as their rods rotate.

其中一类Double Chain基于以下假定：组合结构中每一对角单元在机构展开过程中始终保持梁端夹角不变。

The coarse tuning structure is composed of two digital modules, including a successive approximation register and a frequency comparator with a novel structure.

该粗调环路由数字电路设计实现，包含逐次逼近寄存器和新结构的频率比较单元两个模块。

It is absolutely necessary to study classify, patterns and dynamic of the landscape of watersheds from the level of landscape, in order to get system knowledge for whole watershed and to provide foundation for landscape construction of the region, taken count of the close relationship between the landscape structure and its hydrological process, its pollution shifting process and suppuration of biodiversity.

流域的景观结构特点与流域的水文过程、污染物迁移过程及对生物多样性的支持功能密切相关，因此有必要从景观水平上研究流域的景观分类、景观格局与动态特征，以期获得对流域整体的系统认识，为开展以流域为单元的景观生态建设提供依据。

The microwave absorbing performance of frequency selective surface with resistance patch was analyzed in this paper.

1引言频率选择表面是二维周期性导体贴片或孔径单元阵列，具有带阻或带通的滤波特性，其频率滤波特性来自它的周期性结构与电磁波的相互作用。

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。