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黑钙土
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黑钙土
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农学
黑钙土
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Chernozem
黑钙土
温带半干润气候地区草原植被条件下形成的,表层具有深厚腐殖质层、下部具有钙积层或石灰反应的土壤。在中国土壤系统分类为均腐土纲,半干润均腐土亚纲;在美国土壤系统分类中,黑钙土属于软土纲的多种类型:冷冻性冷凉软土、黏化冷冻软土、钙化冷凉软土、黏化半干润软土、弱发育半干润软土、钙质半干润软土等。
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spectral diffusion
spectral dimension
spectral dispersion
spectral displacement
spectral distribution
spectral distribution function
spectral domain approach
spectral domain method for electromagnetic field
spectral Doppler broadening
spectral Doppler velocimetry, SDV
spectral duplicity
spectral element
spectral element method
spectral emissivity
spectral emissivity measurement
spectral energy distribution
spectral estimate
spectral estimator
spectral expansion of correlation function
spectral expansion of stationary process
spectral factorization
spectral family
spectral fatigue analysis approach for floating deepwater platform
spectral fatigue analysis approach for tubular joint
spectral feature parameterization
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