A device used for automatic collection of cathodic protection potential data in cyclic wet-dry environments was designed and manufactured.
设计研制了一种用于干湿交替环境下,自动采集阴极保护电位数据的装置。
The article introduces the methods of ancient books protection from these aspects: collection environment, mothproof approach, repairing the damaged ancient books.
该文从古籍收藏环境、虫防蛀、籍修复等方面详细介绍了古往今来古籍保护的方法。
Three aspects are expounded in this article: the collection, arrangement and protection of photograph files.
本文从照片档案的收集、整理、保护三方面论述了强化照片档案管理的重要作用。
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