“plowpan”的概念、定义、翻译、参考文献-科学参考

单词	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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