X字开头的单词或词组
xanthochromicx-ray beamxenateX-ray diffractometerX-ray fluorescence spectrometryx-rays tubexeromeniaxerodermiaxerophthalmiaX-ray photoelectron spectroscopyX-ray photographxanthine basesx-ray paperx-ray generatorxantheinxiphix-waveX-ray crystallographyxerocheiliaxerocotyxenogamyX-ray diffraction analysisX.25 protocolxylindeinxylanasexerostomiaxenomeniaX-ray fluorescence anaiysisxerodermaticximenynic acidx-ray shortX.25x-ray spectroscopyxiphisternal jointsxerodermaxysterx-ray targetxerographicX-ray peak broadeningxanthocytexylyleneX-ray test
