X字開頭的單詞或詞組
xenatexanthochromicx-ray beamX-ray diffractometerX-ray fluorescence spectrometryX-ray photoelectron spectroscopyx-rays tubexerodermiaxeromeniaxerophthalmiaX-ray photographxanthine basesx-ray generatorx-ray paperxiphixantheinX-ray crystallographyx-wavexerocheiliaxerocotyxenogamyX-ray diffraction analysisxerostomiaX.25 protocolxylanasexylindeinxenomeniaX-ray fluorescence anaiysisxvxerodermaticx-ray spectroscopyximenynic acidx-ray shortX.25xiphisternal jointsx-ray targetxysterxerodermaxylylenexerographicX-ray peak broadeningxanthocyte