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磨料磨具
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磨料磨具
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abrasives and abrasive products
磨料磨具
磨料和磨具的总称。磨料是在磨削、研磨、抛光、钻切等机械加工过程中起切削作用的颗粒状或粉粒状无机非金属晶体材料。磨具是以磨料为核心切削材料制成的用于磨削、研磨、抛光、钻切等加工的定形或不定形复合材料工具。
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economic forecast
economic forest breeding
economic formation of society
economic foundation
economic function of green space
economic functions of the socialist state
economic geography and public policy
economic geography of forestry
Economic Geography: the Integration of Regions and Nations
economic globalization
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Economic Growth and Agriculture
economic growth factor
economic growth theory
economic hinterland
economic impacts of the port
economic incentive instruments
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economic information resource
economic information science
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