| 单词 | x-ray thickness gage | 
| 释义 | x-ray thickness gage [`eks´rā `thik·nǝs ´gāj]  ENGINEERING A thickness gage used for measuring and indicating the thickness of moving cold-rolled sheet steel during the rolling process without making contact with the sheet; an x-ray beam directed through the sheet is absorbed in proportion to the thickness of the material and its atomic number.  | 
	
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