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汉语拼音：pí céng

植物根或茎内表皮和韧皮部之间的部分。主要起保护作用，也有支持、贮藏等作用。幼茎的皮层细胞内含有叶绿体，能进行光合作用。

• The collagen that is included in face creams comes from animal skin.

  面霜中的胶原蛋白取自动物皮层。

• The inner layer of the cortex differentiates into the endodermis.

  皮层的内层分化为内皮层.

• Cortical cells begin to divide.

  皮层细胞开始分裂.

• Trichomes are unicellular or pluricellular outgrowths from the epidermis of leaves, shoots, and roots.

  毛状体是叶片 、 枝条和根的皮层的单细胞或多细胞的外生物.

• Food particles in the mid gut are generally separated from the epithelium by membrane.

  中肠中的食物颗粒,通常被粘膜所包围,从而与上皮层分隔开.

• An image fusion method based on cortex transform is proposed.

  摘要提出一种基于皮层变换的图像融合方法.

• NOS - positive neurons were present in LGN, visual cortex and parietal cortex.

  结果:nos阳性细胞存在于大鼠LGN 、 视皮层及大脑项叶皮层中.

• Cortex and other cerebral parenchyma also had multiple abnormal nodular with calcification.

  其余脑实质及皮层下亦可见散在结节状和片状异常信号,合并有钙化.

• On OCT choroidal folds involved choroid and retinal pigment epithelial layer ( RPEL ).

  OCT 检查显示皱褶累及脉络膜和视网膜色素上皮层.

• However, there is one lesson we may learn from cortical excisions.

  然而, 我可以从皮层的切除学到宝贵的一课.

• The visual cortex is activated by merely imagining a musical score.

  视觉皮层可以被仅仅想象一张乐谱而激活.

• The tissues of the stele and cortex are derived from the corpus.

  中柱和皮层组织就是来源于原体.

• The auditory cortex is activated by singing a song in your head.

  听觉皮层可以被在头脑中唱一首歌激活.

• Thin - walled cells of cortex and pulp are rich in rhaphides.

  皮层和髓中的薄壁细胞富含针晶.

• The primary root is tetrarch , and endodermis with casparian strip is obvious.

  初生根为四原型, 内皮层明显,可见到凯氏带.