单元核

The filter network employs six biquadratic switched-current filters in a parallel connection, in which the S2I memory cell is used as the core of the filter.

该滤波器网络由六个以S2I存储单元为核的双二次开关电流滤波器并联而成。

This dissertation divides into seven chapters and the main contents and conclusions are listed as following:1. Three series binuclear lanthanide carboxylate coordination polymers 1～7 have been synthesized under hydrothermal conditions by altering the length of carbon chains between carboxyl group and phenyl ring on ligands, which are isophthalic acid, 1,3-phenylenediacetic acid and 1,3-phenoxydiacetic acid, and lanthanide ions such as Pr~(3+), Eu~(3+)and Ho~(3+).

论文共分七章，主要研究内容和结论如下：1、通过改变间苯二甲酸配体的羧基和苯环之间的碳链长度，从间苯二甲酸、间苯二乙酸到间苯二氧乙酸，以及改变稀土离子半径Pr~(3+、Eu~(3+)和Ho~(3+)出发，在水热条件下制备了三个系列双核金属单元的稀土羧酸二维配位聚合物1～7。

The penalty function is adopted to impose the essential boundary condition, the tensor product weight function with a rectangular influence domain is chosen, and the finite element background cell is considered as the integration unit.

将无网格再生核质点法用于刚塑性可压缩材料轧制过程的模拟，采用罚函数满足本质边界条件，选用矩形影响域的张量积核函数，利用有限元网格作为积分单元，对求解域内和边界上采用不同的高斯积分方案。

In design of rectifying unit to separate toluene-titanium tetrachloride,according to design projects,the theoretical plates of rectifying tower were calculated by the software with graphical calculation of theoretical plate.The tower load parameters in now running float valve tower were checked by the KG-TOWER float valve tower checking softwarel.The packing-tower diameter was calculated by high-effciency structured packings and hydraulic calculation softwocre.The evaluation through calculating data of valv...

在设计分离甲苯—四氯化钛的精馏化工单元中，依据设计任务，通过使用图解法计算理论板软件，计算精馏所用的理论板数；运用KG—TOWER浮阀塔校核软件，对现用浮阀塔进行塔负荷等参数的校核；采用等板数较大的高效规整填料与精馏塔水力学计算软件，来计算填料塔的塔径；通过对浮阀塔和填料塔的计算数据进行评价，得出结论认为选用填料塔设计优于浮阀塔设计。

Compound (3) and (4) are isostructural compounds containing lanthanide binuclear dimer and 1-D lanthanide helical chain.

化合物(3)包括两种基本结构单元，由配体pydc上μ3-O桥连起来的镧双核单元和1-Dn螺旋链。

Compound 1 is a binuclear cadmium complex and adjacent dimers are extended into 1D supramolecular network through π-π interactions.

结果表明化合物1为双核镉配合物，相邻的双核单元通过π-π堆积作用拓展为1D超分子。

This fact indicated that the dendrimers three-dimensional hyper-branched structure had great protection to the core and the emanative structure also reduced the interaction between the cores of molecules.

这表明树枝单元的三维空间结构对中心核起到了很好的保护作用，另外发散的构型使得中心核之间的相互作用减弱。

By the analysis of the characteristic and restriction of the gear components ,this paper upbuilds the characteristic model based on the restriction and actualizes data transmission and information sharing among CAD.CAE and CAPP .This paper analyzes the general principle of parameter determination and strength check about gear and researches the algorithmic of gear strength check based on the characteristic .This paper introduces expert knowledge into respective procedure of CAD.CAE and CAPP and actualizes the intellectualization in design process .strength analysis and process planning .

以齿轮类零件作为研究对象，在分析了其特征及约束的基础上，利用数据库技术和图形单元建模技术，建立了基于约束的特征模型，实现了CAD／CAE／CAPP之间的数据传输和信息共享；分析了齿轮参数确定、强度校核的一般原则，进行基于特征的齿轮强度校核的算法研究；将专家知识融入在CAD、CAE、CAPP各个过程中实现了设计过程、强度分析和工艺分析的智能化。

In addition, digital controllable ports of the padded delay cell are parametric, so the parameter can be configured at different design stages to change delay and offer flexible timing of IP core interface.

另外，弹性延迟单元中的数字控制端采用参数化可配置设计，数字控制端的参数值可以在设计的各个阶段自由重置，从而改变IP核接口的延迟，增加IP核接口的时序柔性。

There are three stages in the formation process of illite fundamental particle:① the nucleation stage of 2-nm thick illite particle at the incipient process of montmorillonite illitization;② the simultaneous nucleation and growth stage and ③ the surface-controlled growth stage.

伊利石单元粒子的形成过程有三个阶段：蒙脱石伊利石化过程中2nm厚的伊利石粒子的成核作用阶段、成核作用与生长作用阶段和表面控制生长阶段。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。