This SD model has to be different from the one used in Homework 4 and 6.

这系统动态学(SD)模型必须不同于课后作业4和6的模型。

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Taking the forestry economy system of Nanch 'a area in Heilongjiang province as an example, a system dynamics (SD) model is built, tested and analyzed based on structure analysis.

以黑龙江省南岔区(局)林业经济系统为例，在分析系统结构的基础上，构建了林业经济系统SD模型，并且对总体模型进行历史检验与仿真分析。

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Therefore, the model of SD with non-spatial dynamic simulation melted with spatial analysis of GIS technology can make full use of their advantages.

因此，在以空间分析为特色的GIS技术环境下融入非空间动态模拟的SD模型，可充分利用两者的优势。

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Samsung's Premium Blu-ray Player (model BD-F7500) features advanced upscaling capabilities, allowing users to experience ordinary SD and HD content in superior resolution.

ENGADGET: Samsung introduces its CES audio hardware, claims a world first

Samsung's Premium Blu-ray Player (model BD-F7500) enhances the joy of watching your favorite movies by transforming ordinary SD and HD content into a superior resolution, such as that delivered by Ultra High Definition (UHD)-supported televisions.

ENGADGET: Samsung introduces its CES audio hardware, claims a world first

Model AVR-990 features Anchor Bay Technologies ABT-2010 advanced video deinterlacing and upscaling, converting SD sources to HD.

ENGADGET: Denon outs 2009 line of Blu-ray players, AV receivers and headphones