10nm
例句释义:1.The protective cell wall of E. cop is 10 nm thick. What percentage of the total volume of the bacterium does the wall occupy?大肠杆菌的保护性的细胞壁厚度为10nm，细胞壁占细胞总体积的百分比是多少？
2.Such methods produce ribbons that are relatively wide (more than 10 nm across) with rough edges.这些方法得到的石墨烯带都比较宽（超过10nm），而且边缘粗糙。