Space and space interaction has been a focus of geography research.

空间问题与空间相互作用一直是地理学研究的焦点之一。

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The structure of No. 15 layer in Xingshan mine is analyzed with mechanics, and the fault distributed in space, interaction cutting relation and rule are revealed.

对兴山矿二水平四石门中15层区构造进行力学分析，揭示区内断层在空间上的展布、相互切割关系及其规律性。

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According to the idea, these particles acquire mass through their interaction with a field that permeates space.

BBC: Peter Higgs: honour for physicist who proposed particle

The power of face-to-face interaction is relevant in the retail space as well.

FORBES: The Limits of the Virtual: Why Stores and Conferences Won't Go Away

Risk: Factions has a chance to rekindle that sort of interaction that made Facebook such an ideal gaming space in the days of Scrabulous.

FORBES: Review: Risk: Factions is a Social Game I'm Not Ashamed to Play