双

The company, dual-cone production capacity will reach more than 2,500 units, is the largest double-barrel screw cone production base.

目前公司锥双年生产能力达到2500多套，是全国规模最大的锥双机筒螺杆生产基地。

Grey Goose and Belvederes. Double-breasted suits and double-breasted Women We Love.

灰鹅和贝尔威德莱斯伏特加酒，双排扣的大衣和我们喜爱的双乳房的女人。

In Control Panel, double-click Administrative Tools , and then double-click Computer Management .

在控制面板，双点击行政工具，然后双击计算机管理。

In addition, the double-ended location is based on double-ended communication.

另外，双端法测距是建立在双端通信的基础之上的。

You saw that you might be able to get rid of your diamond loser if West had the doubleton spade king, seven hearts and two cards in each minor suit.

你看到也许能处理好方块输墩，如果西有双张黑桃带K，七张红心和低花各双张的话。

Most of optic a l systems consist of a number of singlet a nd doublets, of which the singlet c a n be considered a s a speci a l doublet.

摘要大多数光学系统都是由若干单透镜和双胶合透镜组成的，单透镜可以看成是双胶合透镜的特殊情况。

We develop and apply the Hirota bilinear-θfunction method,Jacobi elliptic function expansion method,linear superposition method and F-expansion method respectively to solve many 2+1 dimensional nonlinear wave models including 2+1 dimensional 2DsG equation,the coupled ZK equation,2+1 dimensional KdV equation,2+1 dimensional long wave short wave resonance interaction equation and 2+1 dimensional dispersive long wave equation,abundant Jacobi elliptic function doubly periodic solutions are derived.These solutions show various periodic wave shapes and special periodic characters.

发展和应用Hirota双线性-θ函数方法，雅克比椭圆函数展开法，线性叠加法，F-函数展开法等分别求解2+1维2DsG方程，耦合ZK方程，2+1维KdV方程，2+1维长波短波共振相互作用方程，2+1维色散长波方程，获得丰富的雅克比椭圆函数双周期波解，描述了一些周期波形态及周期特性。

2According to requirement of suppressing stray light in two-mirror system, vertex coordinate formulas of inner baffle are deduced based on geometrograph in the case of certain obscuration, viewing field and vignetting. In order to reduce the obscuration, conical baffle of secondary mirror is ameliorated into a shutter one. Outer baffle is designed when angle of stray light suppressing is foregone and the vanes are designed in C-language program. Finally, the same-height vanes in drawtube between primary and secondary mirrors are designed for further suppressing the stray light in two-mirror system.

给出双反射系统杂散光消除设计的具体要求，结合作图法，推导出考虑视场大小及初始中心遮光比确定时，主次镜内遮光罩顶点坐标公式；讨论考虑渐晕时主次镜内遮光罩的设计；为了减小初始中心遮光比，将次镜锥状遮光罩改进为百叶窗式结构；设计在杂散光源抑制角已知时的外遮光罩，并利用C语言实现程序化设计其挡光环的方法；设计主、次镜间镜筒内壁上等高挡光环，进一步抑制双反射系统的杂散光。

New concepts of the all phase Walsh biorthogonal transform and the dual biorthogonal base vectors were proposed.Based on this transform,a new image compression algorithm was introduced.

本文提出了全相位沃尔什双正交变换和对偶双正交基向量的新概念，并提出了一种基于这种变换的、新的图像压缩算法。

This gives the conclusions that the period and earthquake response show to be small when base buries have 6 meters in difference under the same earthquake wave. The dual tower with base structure can be simplified as a single tower with a base structure to simplify seismic analysis and calculations with small errors, when stiffness of the basement of the dual tower is larger.

得出了如下结论：同一地震波作用下，在基础埋深相差6m左右时，其周期和地震反应相差较少；一个大底盘上双塔楼建筑当底盘刚度较大时，可以将双塔楼带底盘结构简化为单塔楼带底盘结构进行抗震分析计算，误差较小。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。