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灰化作用
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灰化作用
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灰化作用
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灰化作用
土壤铁、铝、锰等金属离子与有机酸螯合淋溶淀积,在土体上部形成二氧化硅相对富集的灰白色淋溶层,而在土体下部形成三、二氧化物相对富集的淀积层的过程。
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On the Revolutions of the Heavenly Spheres
onthermal sealed tea bag wet lay nonwoven
On the Road
On the Second of the Five Poems
On the seventh Day
On the Seventh Rank of Nobility
On the Significance of Militant Materialism
On the Soul
on-the-spot coverage
On-the-spot interview
On-the-spot policing superintendence
On the Stone Gate Towers
On the Street in Vientiane
On the Style of Rhythmical Prose
On the Sungari River
On the Systems of the Six Dynasties
On the Teacher Education
On the Traditional Chinese Literary and Poetry
On the Tragedy of Wucheng
On the Trinity
On the Waterfront
On The Way Delivery
On the Way to Language
On the Witness Stand
On Three Theories: On Poetry
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