The researchers analysed the sizes and structures of ash particles using a variety of techniques, such as atomic force microscopy, scanning electron microscopy and X-ray diffraction.
研究人员使用不同的技术研究了火山灰颗粒的尺寸和结构，例如原子力显微镜、电子扫描显微镜和X射线衍射。
2
The scanning machines, called "backscatter scanners," deliver a dose of ionizing radiation equivalent to 1 percent or less of the radiation in a dental X-ray.
扫描机，所谓的“反射散射扫描仪”，发射出的电离辐射剂量相当于牙科辐射X射线的1%或更少。
3
One major advantage with technology like Korset in addressing all that, he said, is that it doesn't rely on the airline terminal X-rayscanning approach to spotting such malware.