The researchers used a focusedbeam of caesium ions to dislodge molecules of water from the inclusions and measured the amount with a mass spectrometer.
研究人员用聚焦的铯离子束将水分子自包裹体中打出并用质谱仪测量其数量。
2
The microscope works by scanning a focusedbeam of electrons across an object.
扫描电子显微镜是通过扫描聚焦在物体上的电子束来工作的。
3
Thee microscope works by scanning a focusedbeam of electrons across an object.