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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 krom
′
i tər),
USA pronunciation
n.
Weights and Measures
a 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