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soil morphological characteristics
释义
soil morphological characteristics
Encyclopedia
农学
土壤形态
释
soil morphological characteristics
土壤形态
包括颜色、质地、结构、孔隙、紧实度、新生体、侵入体、构造和厚度等的土壤外部特征。土壤形态是土壤发生发展历史的集中反映,也是认识土壤形成和演化历史的关键。因此,土壤形态特征是研究土壤发生和诊断土壤性质的基础,是划分土壤层次和确定土壤分类的重要依据,也是野外土壤描述的主要内容。
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electric propulsion of fishing vessel
electric propulsion system
electric pump liquid rocket engine
electric quadrupole
electric quadrupole moment
electric quadrupole radiation
electric quantity
Electric quantity Sensor
electric railway
electric reactor
electric regulatory systems
[electric] resistance
electric resistance
electric resistance vacuum gauge
electric-resistance welded steel pipe
electric resonance
electric response audiometry
electric rotating machinery
electric safety sign
electric saturation
electric separation
electric servo system
electric shears
electric shield and magnetic shield of generator
electric shock
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