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光电式轴转速监测装置
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光电式轴转速监测装置
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photoelectric shaft speed monitoring device
光电式轴转速监测装置
利用光学原理对轴转速进行测量的装置。可分为投射式和反射式两类。
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agricultural competitive industries
agricultural competitiveness
agricultural cooperation economic organization
agricultural cooperation movement in China
agricultural crane
agricultural crisis in the 1920s and 1930s
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agricultural damage due to rain
agricultural development project
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agricultural diesel oil
agricultural disaster chain
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Agricultural Disasters and Reduction Contermeasures
agricultural disaster system
agricultural diversification
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agricultural drought forecast
agricultural droughts in China
agricultural E-commerce
agricultural economic division
agricultural economic history of China
agricultural economics
agricultural economics and management
Agricultural Economics and Management Disciplinary Appraisal Panel
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