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x-ray spectroscopy x-ray spectrum x-ray star x-ray target x-ray telescope
x-ray therapy x-ray thickness gage x-ray tube x-ray unit XS-3 code
X test XU X unit X wave x,y chromaticity diagram
XY coordinate plotter Xyelidae xylem xylene xylenol
xylidine xylinite xylite xylitol Xylocopidae
xyloid coal xyloid lignite xylol Xylomyiidae xylophagous
xylose XY plotter XY recorder Xyridaceae XY switching system
Y yacca gum yacht Yagi antenna Yagi-Uda antenna
yag laser yak yalca yam yamase
Yang-Mills theory yard yardage yardang yardang trough
yardarm yard crane yard drain yard lumber yard maintenance
yardstick compass Yarkovsky effect Yarmouth interglacial yarn yarn-dyed

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