英语词汇“protophloem”是什么意思，“protophloem”的读音、用法及例句翻译-乐坝网

词汇	protophloem
释义	pro·to·phlo·em AHD[prō'tə-flōʹĕm'] D.J.[ˌprəʊtəˈfləʊˌem]K.K.[ˌprotəˈfloˌɛm]n.（名词） The first formed phloem that differentiates from the procambium.原生韧皮部：首次形成的韧皮部，用来区别原生层
随便看	sporangium spore spore case spored sporeling sporelings spore mother cell spores spori- sporicide sporiferous sporing Spork sporo- sporo- sporocarp sporocarps sporocyst sporocyte sporocytes sporogenesis sporogonies sporogony Carian Carians

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