Ependymal cysts are thought to originate from invagination of neuroectoderm, and the cysts are lined with either cuboid or columnar epithelium.
室管膜囊肿被认为起源于神经外胚层的内陷，囊肿覆盖以柱状和立方上皮细胞。
According to the former solution of spherical or columnar hole about material strain-softening model, the model for grout bulb expansion is formed in compaction grouting.
根据他人已有的关于材料应变软化模型的球(柱)形孔扩张问题的解，建立了压密灌浆中的浆泡扩张模型。
The origin of the cysts is unknown, but they are thought to originate from invagination of neuroectoderm, and the cysts are lined with either cuboid or columnar epithelium.
囊肿的起源尚不清楚，但是它们被认为是起源于神经外胚层的内陷，囊肿壁覆盖以柱状或立方上皮细胞。
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