二中心的

The method of calculating SI filters'order is introduced, and the design method of SI band-pass leap-frog filter is also presented.

提出了一种新的开关电流双二次滤波器的结构，应用此结构设计的滤波器的中心频率和Q值均可调节，PSPICE仿真验证了这一特性。

A method of moment features testing components' states is put forward to solve this problem.First the components' barycentric coordinates and second-order centered moments are calculated.Then the inclined angles are obtained,on the basis of which the inclined components can be rectified.

针对这一问题，提出了一种矩特征检测构件状态的方法，该方法首先计算出图像中构件的质心坐标和二阶中心矩，然后求出构件的倾斜角度，根据倾斜角对处于倾斜状态的构件进行校正。

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。

Among the large number of nonlinear absorbers, the material applied most extensively is phthalocyanine reverse saturable absorption compound which is organic large molecule with central symmetry two-dimensional π-electron conjugate system. In the off-resonance condition, its absorption coefficient will raise along with the increasing of incoming light intensity, which shows its reverse saturable absorption properties.

在非线性光学材料中目前最具应用价值的是酞菁类的反饱和吸收材料，这是一类具有中心对称二维π电子共轭体系的有机大分子，在非共振激发条件下，吸收系数往往会随入射光强的增加而增加，体现反饱和吸收。

According to the characteristic of the data processing, a interferogram regrouping error correction algorithm is designed, and devise a method to correct the sampling position error of the central dark fringe.

通过对其数据处理流程特点的分析，设计了一种归一化算法，对由干涉图重组时产生的误差进行了校正，并对在数据采集过程中干涉图的中心暗纹位置的采样误差进行了二次曲线拟合校正。

As the beautiful and familiar melodies of "Chun Tian Zai Na li","Mai Bao Ge"(Little newspaper vendor's song),"Rang Wo Men Dang Qi Shuang Jiang"(Let's go boating),"Diu Shou Juan" started echoing inside the music room, the foreign parents begun their first lesson of Chinese children's songs seriously, while all the Chinese parents looked excited and hum the songs easily with smiles on their faces.

"一只哈巴狗，坐在家门口，眼睛大又亮，爱吃肉骨头"在金宝贝上海古北中心， 9个中外家庭正围着老师在学习大家耳熟能详的中国传统儿童歌曲随着《春天在哪里》、《卖报歌》、《让我们荡起双桨》、《丢手绢》等熟悉的音乐声响起，老外爸妈正二八经地学唱中国歌曲，而中国家长的脸上无不露出孩子般兴奋的表情，轻轻哼唱起来，小朋友们也开心地手舞足蹈

Company completed in June 2002, a total investment of 50 million yuan, covers an area of a project more than 38.9 thousand square meters, with more than 1 thousand three hundred square meters display of CNC machine tools, training centers, more than 3000 square meters of ordinary lathe, milling machine, grinding machine , planer, drill press, boring machine, presses, four-post presses, shearing machine, bending machine, as well as the drilling machine, tapping machine, instrument lathe, such as the display of 23 types of electrical and mechanical rooms, more than 10,000 square meters of warehousing, 4000 many square meters of office building, the company adopted ERP network management.

公司于2002年6月建成，总投资5000万元人民币，一期项目占地面积38900多平方米，拥有1300多平方米数控机床展示、培训中心，3000多平方米的普通车床、铣床、磨床、刨床、钻床、镗床、压力机、四柱压机、剪板机、折弯机、以及钻铣床、攻丝机、仪表车床等二三类机电的展示厅，10000多平方米的仓储，4000多平方米的办公楼，公司采用ERP网络管理。

Plans a push into shopping malls in China's second- and third-tier cities as a path to growth, said Chief Executive Ren Rong.

的行政总裁任荣说M中国二、三线城市的购物中心是国内地产行业的投资首选。

The purpose of tracing its past is to understand better the theories and research methodology of psycholinguistics for the time being so as to do a better job in this field.

二、兴起与发展1。早期研究19世纪末20世纪初可以说是心理语言学的第一个繁荣时期。欧洲的德国是当时实验心理学研究的中心。

Old stones covered with Senate Square, center, built in 1894 erected the Tsar Alexander II, five bronze statue to commemorate his extensive autonomy to Finland.

在铺满古老石块的参议院广场中心，竖立着建于1894年的沙皇五历山大二世铜像，以纪念他给予芬兰广泛的自治。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。