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土壤密度
释义
土壤密度
Encyclopedia
农学
土壤密度
释
soil density
土壤密度
不包括土粒间孔隙容积的单位容积固体土粒的烘干质量。又称土粒密度(soil particle density)。基本土壤物理参数之一,单位为克/厘米3。
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frequency modulation, FM
frequency modulation laser
frequency-modulation laser interferometry
frequency modulation of hydro-generator unit
frequency modulation radar
frequency modulation radio
frequency modulation screening
frequency modulator
frequency multiplication
frequency multiplier
frequency number
frequency of access
frequency of alternating current
frequency of an event
frequency of an oscillation
frequency of a wave
frequency of disease occurrence
frequency offset
frequency of language constituents
frequency of occurrence
frequency of operation
frequency of samples
frequency of urinatior
frequency plane
frequency plane mask
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