Band heterotopia is diagnosed by visualization on MRI of a smooth layer of gray matter separated from the cortex and ventricles by white matter.
带状异位在MRI上表现为一个平滑的灰质带位于脑室和皮质之间，中间夹以脑白质。
Shear band propagation is faster in the specimen with smooth ends than that in the specimen with rough ends.
端面光滑时剪切带的扩展速度及泊松比高于端面粗糙时。
The results indicate that there is a smooth and isolated band in the band gap if photonic crystal has a dot defect.
计算结果表明，在二维光子晶体中引入单独的点缺陷后，在原来完整的光子晶体的禁带中会出现平坦孤立的能带。
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