An analysis of highly-enriched uranium-heavy water lattice was made recently using few-group diffusion theory and the equivalent diffusion of control rods and target assemblies.

利用少群扩散理论和控制棒与靶件的等效扩散处理方法进行了高浓铀-重水栅的分析计算。

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"Chalk it up to effective marketing, " said Michael Greeson, president of the Diffusion Group, of Apple's green reputation.

WSJ: How Green Is Apple?

The early forecast by The Diffusion Group (TDG) is an indication that podcasting has captured the imagination of digital music player owners who demand to listen to more than just music.

BBC: NEWS | Technology | Podcasting set for 'huge growth'