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永冻层次
释义
永冻层次
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农学
永冻层次
释
permafrost layer
永冻层次
土壤圈中持续多年常年土温≤0℃、处于冻结状态的层次。包括土壤或岩石,以及冰或有机物质。
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economic specific frictional head loss
economic spy
economic stabilization and development law
economic statistics
economic structure
economic structure of society
economic system
economic system reformation
economic systems engineering
economic take-off
economic territory
economic threshold
economic transport air velocity
economic trial
economic types of agriculture region
economic types of pastoralism
economic ultimate recovery
Economic Value Added
economic value of water resources
economic zone
Economic Zone on the west side of the Straits
economization
economized rational approximation
economizer
economizer damage
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