皮部是体表皮肤按十二经脉的循行分布而划分的区域，又是经穴别名。
韧皮部 [植] phloem ; liber ; included phloem
初生韧皮部 [植] primary phloem ; primary bast
后生韧皮部 [植] metaphloem
次生韧皮部 [植] secondary phloem ; secondary bast
原生韧皮部 [植] protophloem
十二皮部 the twelve skin zones ; twelve coetaneous areas ; twelve skin areas ; twelve cutaneous regions
韧皮部射线 phloem ray
韧皮部卸出 phloem unloading
柔软韧皮部 soft bast
十二皮部是十二经脉功能活动反映于体表的部位，也是络脉之气散布之所在。
The Twelve Cutaneous Regions refer to the body superficies on which the functions of the Twelve Regular Meridians are reflected, and the sites where the Qi of the collaterals spreads.
在其他几个性状上，亦经证明有少量地理变异，诸如皮部的某些单萜烯浓度。
Small amounts of geographic variation have been demonstrated in several other traits, such as cortical concentration of certain monoterpene.
水生环境下的藓类植物，细胞胞壁薄，表皮细胞排列不紧密，茎皮部无内外皮部分化。
Compared with xeric and shady mosses, the aquatic mosses had thin cell walls, the loosely arrayed epidermis cells, and no differentiation of cortex.
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