تعريف bureau of standards في الإنجليزية الإنجليزية القاموس.
since 1988 U.S. National Institute of Standards and Technology (NIST) Agency of the U.S. Department of Commerce responsible for the standardization of weights and measures, timekeeping, and navigation. Active since at least the mid-19th century, the agency works closely with the U.S. Naval Observatory and the Bureau International de l'Heure in Paris to ensure global standardized time