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灰褐土
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灰褐土
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农学
灰褐土
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Gary-cinnamon forest soil
灰褐土
温带、寒温带干旱和半干旱地区山地旱生森林灌丛植被下发育的土壤。在中国土壤分类暂行草案(1978)及第二次全国土壤普查分类(1988)中,列为半淋溶土土纲灰褐土土类;在中国土壤系统分类中,相当于干润始成土或钙积干润均腐土;在美国土壤系统分类中,部分相当于钙积半干润软土[注]、黏淀半干润软土[注]、弱发育暗色始成土[注];在联合国世界土壤图(1988)图例中,部分相当于弱发育灰色森林土[注]、钙积灰色森林土[注]、腐殖质雏形土[注]单元。20世纪30~40年代,曾称森林棕钙土、森林栗钙土。又称褐色森林土、灰褐色森林土。
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quadrupole mass spectrometer (QMS)
quadrupole mass spectrosope
quadrupole matrix
quadrupole moment
quadrupole potential
quadrupole radiation
quadrupole resonance
quadrupole term
quadrupole time of flight
quadrupole-time of flight
quadrupole-time of flight (Q-TOF)
quadrupole vibration
Quadtree
quadtree
quadtree index
quail egg
Quakers
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qualification authentication of information consulting industry
qualification framework
qualification inflation
qualification management of environmental impact assessment individuals
qualification management of environmental impact assessment institutions
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