英语词汇“free central placentation”是什么意思，“free central placentation”的读音、用法及例句翻译-烛光网

词汇	free central placentation
释义	free central placentationn.Botany（名词）【植物学】 The arrangement of ovules on a central column that is not connected to the ovary wall by partitions, as in the ovaries of the carnation and primrose.分离中央胎座式：（如在康乃馨和报春花的子房里的）胚珠长在不经深裂片与室壁相连的中央柱上的排列方式
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