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plowpan
释义
plowpan
Encyclopedia
农学
土壤层次
释
plowpan
犁底层
位于耕作层(Ap1)以下较为紧实的土层。耕作表层(Ap)的一个亚层次。用符号Ap2表示。
随便看
complement event
complement graph
complement knot
complement line
complement module
complement number
complement of a graph
complement of a module
complement of an element
complement of an event
complement of a number
complement of a relation
complement of a set
complement of a subgraph
complement of a submodule
complement of a subset
complement of a subspace
complement of credibility
complement receptor,CR
complement-reducible graph
complement relation
complement set
complement subgraph
complement submodule
complement subset
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