By using theory of enveloping semigroup, we give a simple proof of an important theorem concerning proximity relations.

运用包络半群的理论，对接近关系中一个重要定理给出了一个简单证明。

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The application of assimilation theory and principle of proximity learning to Chinese Revision will achieve better results.

同化理论和就近学习原则运用于语文复习中，可以取得比较理想的效果。

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A pullout model is set up in this paper and the fracture theory is employed to analyze the singular stress fields in the proximity of the interface ends.

以锚索拔出为对象建立理论分析模型，对岩锚界面端部的断裂力学行为进行了研究。

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The Highlight smartphone app, which alerts users when their friends are in proximity, must be accessed through a Facebook account, even though in theory it could work independently of Facebook.

WSJ: Corrections & Amplifications

The theory here is that search results are relevant because it is related to your friends, their personal proximity, their friends, the things they do, where they do it and in general their wants and likes.

FORBES: Facebook Graph Search no Threat to Google.... Yet