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单词 national bureau of standards
释义

WordReference Random House Unabridged Dictionary of American English © 2024
National Bureau of Standards, [U.S. Govt.]
  1. Governmentthe federal agency that establishes the standards for units used in measuring the physical properties of substances. Abbr.: NBS, N.B.S.

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更新时间:2024/9/22 7:29:47