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单词 ultramicrometer
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ul•tra•mi•crom•e•ter  (ul′trə mī kromi tər),USA pronunciation n. 
  1. Weights and Measuresa micrometer calibrated to a very fine scale and capable of measuring extremely small magnitudes.
  • ultra- + micrometer 1925–30

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更新时间:2025/7/23 16:20:54