n. phellem
... Phecda 天玑(北斗三)(位于大熊座) phellem 软木组织 phelloderm 软木皮层 ...
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周皮木质根或干的外层组织，包括软木形成层和形成层的产物，如软木。
The outer layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it, such as cork.
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栓内层在内部由软木新生层产生的组织。
A tissue produced inwardly by the cork cambium.
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