“seed fern”的概念、定义、翻译、参考文献-科学参考

单词	seed fern
释义	seed fern Encyclopedia 理学古植物学释 seed fern种子蕨种子蕨纲植物的统称。原始的已经灭绝的一类裸子植物。
随便看	matrix exponential matrix extension problem matrix factorization matrix factorization method matrix field matrix force method matrix form matrix formulation matrix fraction matrix function matrix game matrix geometric method matrix-geometric method matrix geometry matrix grammar matrix group matrix group over a ring matrix group over rings matrix identity matrix index matrix inequality matrixing matrixing circuit matrixing network matrix interference

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