The title instrument is developed, and its structure characteristic is introduced.
研制了电火花精微加工专用机床，介绍了它的结构特点。
The paper presents designing principle, structure characteristic and construction technology of bed rock bench marks.
本文介绍其设计原理、结构特点与施工技术。
The paper presents designing principle, structure characteristic and construction technology of bed rock bench marks.
本文介绍其设计原理、结构特点与施工技术。
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