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The unified discrete iterative map model of peak current and valley current controlled buck, boost, and buck-boost converters is established, and the unified piecewise smooth iterative map and their corresponding characteristics equations are also derived.

本文建立了峰值电流和谷值电流控制Buck，Boost，及Buck-Boost变换器的统一离散迭代映射模型，并导出了统一的分段光滑迭代映射方程及特征值方程，通过数值仿真得到了占空比变化时的正、逆分岔图和Lyapunov指数谱。

For example, the Happy Valley marketing department has developed a multimedia ski map for the ski area that includes video descents of all the ski pistes, which are started by selecting the piste on the trail map.

例如，欢乐谷营销部已开发出一种多媒体滑雪地图的滑雪区，包括视频的潜水的滑雪pistes，开始通过选择piste上的地图。

Many analysis technology and space data are designed by the two-dimensional coordinates or plane coordinate, and used plain map projection methods to storage space coordinates, so many times we all need three-dimensional map projection to convert 3D geographical coordinates into the plane coordinates.

许多分析技术和空间数据都是针对二维坐标或平面坐标设计，以平面地图投影的方式来存储空间坐标，因此很多时候我们都需要利用地图投影将三维的地理坐标转换为平面坐标。

How to use this map: to view your local area in more detail, please use the map controls to zoom in to your neighbourhood or search for your postcode.

如何使用此地图：要查看您的地方，更详细，请使用地图的管制要放大到您的邻里或寻找在您的邮递区号。

The abandoned Public Health Service Hospital is located in the Presidio of San Francisco, at the north end of 15th av (see aerial photo , historical map , google-map , google earth Placemark , and bird's eye view ).

被遗弃的公共健康服务医院"PHSH"是位于旧金山Presidio在15影音北端（见空中照片，历史地图，谷歌地图，谷歌地球地标，并鸟瞰）。

Students can use this map,along with amap from prewar Europe,to draw acomparison map.

同学们可以根据这张地图和战前的欧洲地图，做出一张对比地图来。

The stress map shows the spatial distribution of the o rientation of principal stress axes and the stress regimes An earthquake focal m echanism map for the eas...

主应力方向分布特征表明，东亚地区的现今构造应力场除受印度-欧亚板块碰撞的强烈影响外，俯冲带的弧后扩张亦有重要影响。

In order to make problems simple relative map germs which map proper subspace R~s of R~m to proper subspace R~t of R~n are considered in the paper.

本文将相对映射芽的基本理论与经典奇点理论相结合，把A等价的判断条件应用到相对映射芽环中，推广了原有结论，得出了在两个C~r相对映射芽κ等价条件下判断其A等价的方法。

Mai Shiwei vehicle for the intelligent navigation products through the review and deal with confidentiality and with independent intellectual property rights and copyright in the digital map is the planet map publishers.

为麦士威汽车智能导航产品提供经过审查和保密处理，并拥有自主知识产权和著作权的电子地图的是星球地图出版社。

Contour map of absolute value of pyroelectricity coefficient and isothermal map calculated from pyroelectricity shows that the deep and east of KT8 is the prospective ore area.

根据黄铁矿热电系数计算得出的热场分布与石准立等（1989）利用含铁白云石中包体均一法测温所得出的温度场相同。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。