英语词汇free central placentation怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	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
随便看	helter–skelter helve helved helves Helvetia Helvetian Helvetians Helvetii helving Helvétius hem hem hem hem- hemacytometer hemagglutinate hemagglutinin hemal he-man hemangioma hemangiomas hemangiomata Hemans hemapheresis hemat-

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