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心土层
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心土层
Encyclopedia
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middle layer
心土层
位于表土层与底土层之间的土层。通常指表层以下至50厘米左右深度的土层。厚度20~30厘米。因位于土体中部而得名。
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enterprise competitive intelligence strategy
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enterprise culture theory
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Enterprise Income Tax Law of the People's Republic of China
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更新时间:2026/9/17 3:52:39