X字开头的单词或词组
xylolXPSxenograftxenopsinxistorxanthan gumX-sectionXimeniaX-filmXMPX RemotexanthinxylanX-componentxerotripsisxylocarpxenophoniaxenophobiaxenophobeXANESx raysXNSxerosinx-ray platesx-ray tubexyleninxtalXmodemxanthousxanthoproteic indicesXenopusxylonxantho-X-ray filmxanthalinexerophytexanthorrhoeaxiphinxenolXinhuaXEDITX-coordinate