单词 | ultra-micrometer |
释义 | > as lemmasultra-micrometer 5. Denoting instruments adapted for very minute measurements, observations, etc., as ultra-micrometer. See also ultramicroscope n. ΚΠ 1928 Daily Express 22 June 6 Such instruments as the seismograph, ultra-micrometer, and torsion balance. < as lemmas |
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