X射线 X-ray ; X-rays ; x-ray X ; X ray

x射线 x-radiation ; x radiography ; table top x ray ; x-rays jets

钱德拉X射线天文台 Chandra X-ray Observatory

X射线管 X-ray tube

X射线天文学 X-ray astronomy

X射线脉冲星 X-ray pulsar

X射线光电子能谱学 X-ray photoelectron spectroscopy

X射线荧光光谱仪 X-ray fluorescence

硬X射线调制望远镜 Hard X-ray Modulation Telescope