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采用国际标准是我国当前一项重要的技术经济政策。为积极采用国际标准,长沙矿山研究院开展了机械设备中大量使用的通用
The adoption of international standards is an important technical and economic policy in our country. In order to actively adopt international standards, Changsha Institute of Mining carried out a large number of general use in machinery and equipment