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黑钙土
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黑钙土
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黑钙土
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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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mean value of a random variable
mean value of data
mean-value property
mean value theorem
mean-value theorem
mean-value theorem of differentials
mean-value theorem of integrals
mean value theorems
mean-variance model
mean vector
mean velocity
mean wavelength
mean wind
Meara vocabulary acquisition model
mear infrared remote control device
mear solar year
measles
measles vaccine
measles virus
measurability
measurable
measurable cardinal
measurable cardinal number
measurable cascade
measurable decomposition
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