The hair is formed from cells just above the bulb, which also give rise to concentric zones of differentiated epithelial cells destined to form the inner and outer root sheaths.
毛球之上的细胞形成毛发，产生由分化的表皮细胞构成的同心环状区，形成内根鞘和外根鞘。
Each eye is divided into seven concentric circles around the pupil and 45 reflection zones, representing the corresponding organs and systems.
每一只眼睛被分为七个围绕着瞳孔的同心圆和45个反射区，代表着不同的对应器官和系统。
The concentric alteration zones from the inner outward are successively the K-silicate zone, the quartz-sericite zone, and the propylitic zone.
从中心向外依次为钾硅酸盐化带、石英绢云母化带、青磐岩化带。
The concentric alteration zones from the inner outward are successively the K-silicate zone, the quartz-sericite zone, and the propylitic zone.
从中心向外依次为钾硅酸盐化带、石英绢云母化带、青磐岩化带。
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