The distribution and variation of sand amount (A) , absolute and relative, at the height layer of 0-10 cm are qualitatively and quantitatively analysed.
本文对0—10厘米垂直高度层内沙量（包括绝对和相对）的分布及变化，进行了定性和定量分析。
The distribution and variation of sand amount (A) , absolute and relative, at the height layer of 0-10 cm are qualitatively and quantitatively analysed.
本文对0—10厘米垂直高度层内沙量（包括绝对和相对）的分布及变化，进行了定性和定量分析。
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