... 皮蠹总科 Dermestoidea 皮下鞘 hypodermic envelope 皮下色 subhypodermal colo(u)r ...
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上表皮下方有2-3层长柱形的栅栏组织,在主脉大侧脉外方具有由大量机械组织组成的束帽或束鞘。
There are 2-3 layers of long-column-shaped palisade tissue under the upper epidermis, and there are a great number of mechanical tissues which made up of vascular bundle sheath .
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