外韧皮的_有道手机词典

1.暴马丁香叶柄表皮外覆有一层发达的角质层，韧皮部外有较发达的韧皮纤维。
In the petiole of Suringa reticulata (Blume) Hara var. mandshurica (Maxim. ) Hara, there are thick cuticle on the epidermis, developed phloem fiber surround the phloem.
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