X字开头的单词或词组
xeroradiographyxeraphiumX Windows Protocolxanthene dyesxanthenolxanthochelidonic acidxantorubinxylene monochloridexylochloralxanthuriaxylene iodidexylidic acidX-ray spectrochemical analysisxanthopurpurinxylopropaminexanthopterinxiphoid anglesxylosteinxenon trioxidexerosis corneaeX thoriumxchromosomexiphosternal crunchxviiiX-ray equipmentX-ray imageX-reactive dyesxanthydrylxerocopyxylidenexerographxiphoid ligamentxylitoneXanthoxylum Gmel.xemeXanthium canadensexorxylene balsamxanthogenic acidxerophthalmusX-ray background radiationx-ray photography
