This paper analyzes the basic characteristics of DDRS, and discusses the main modes of developing DDRS by the library.

分析了数字化参考咨询服务的基本特征，论述了图书馆开展数字化参考咨询服务的主要模式。

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Objective: To explore the clinical value of dental radiograph process in digital dental radiography system (DDRS) in diagnosing and treating the proximal caries.

目的：探讨直接数字摄影系统图像处理技术在邻面龋诊断中的临床价值，为邻面龋的临床诊断和治疗提供参考。

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Objective:To explore the clinical value of the dental radiograph process in the digital dental radiography system(DDRS)in diagnosing and treating proximal caries.

目的：探讨直接数字摄影系统图像处理技术在邻面龋诊断中的临床价值，为邻面龋的临床诊断和治疗提供参考。

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