工作辊表面氧化膜状态与带钢表面氧化铁皮细孔及小白条压入缺陷的产生有密切关系。
The defects of the needle-shaped hole and narrow white threads on the strip surface have close relationship with oxide film of work roll.
研究人员利用诸如上端有牙刷毛大小细孔的聚合物之类的物质，构搭成细胞可以着床安歇的形状。
Using materials such as polymers with pores no wider than a toothbrush bristle, researchers have learned to sculpt scaffolds in shapes into which cells can settle.
孔有毛细孔和可见小孔洞，缝有微细裂纹和动态变化的可见缝。
The hole has the pore and the small hole, the seam has the tiny crack and the dynamic change obvious seam obviously.
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