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X-ray tube

資料來源 : Webster's Revised Unabridged Dictionary (1913)

X-ray tube \X"-ray" tube\ (Physics)
   A vacuum tube suitable for producing R["o]ntgen rays.

資料來源 : WordNet®

X-ray tube
     n : a vacuum tube containing a metal target onto which a beam of
         electrons is directed at high energy for the generation
         of X rays
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