Enamel is almost completely transparent in the near-infrared spectrum , allowing oct to create highly detailed images of teeth as well as soft tissue .
由于珐琅质在近红外光谱端近乎完全透明,因此oct可以形成牙齿和软组织的高精确图像。
Oct 15th 2011 | from the print edition
2011年10月15日|来自打印版
Oct 27th 2012 | from the print edition
2012年10月27日|来自打印版
From oct 1 to 7 , the days of the holiday , about 24.3 million tourists went to the 119 national scenic spots that are directly overseen by the national tourism administration .