And x-ray diffraction allows us to characterize solid matter.

让我们可以用来,表征固态物质。

麻省理工公开课 - 固态化学导论课程节选

X-ray plates and the surgeon's matter-of-fact prognosis, raises questions of its own.

ECONOMIST: Asian film: Song of Song's | The

Arnesen's resignation is the second high-profile departure announced by the club in a matter of weeks after long-serving assistant manager Ray Wilkins left earlier in the month.

BBC: Frank Arnesen resigns as Chelsea sporting director

As matter gets compressed by the black hole, X-ray radiation is emitted.

CNN: Black holes abound in early universe