The peaks in the X-ray absorptionspectrum can shed light on the precise nature of the target substance'schemical bonds, and hence on its structure.

X射线吸收光谱的峰值能显示出目标物质的化学键的确切性质，从而显示其组织结构。

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Heat Ray deals X damage to target creature.

热射线对目标生物造成X点伤害。

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And it has higher operating frequency than gas target soft X-ray sources whose nozzle is controlled by a solenoid valve.

与喷嘴由电磁阀控制的气体靶激光等离子体软x射线源相比，它有较高的工作频率。

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But the science team on Curiosity needed a target to try out the first close-contact work using the rover's arm-held X-ray-spectrometer, APXS. So the dark pyramid was chosen and informally given the name Jake Matijevic in honour of a recently deceased rover engineer.

BBC: Cosmic coincidence on the road to Glenelg

The different instruments were needed to track down the target galaxies, measure star formation and identify mergers, and, crucially, with Chandra, see the X-ray emissions that come from heated material as it is sucked into a black hole.

BBC: NEWS | Science/Nature | Deepest X-rays tell merger story