the scientific use of a tachometer; the measurement of velocity.
| 单词 | θ107625 |
| 释义 | the world > movement > rate of motion > [noun] > in the physical sciences > measurement of (12) tachometry1891 the scientific use of a tachometer; the measurement of velocity. velocimetry1969 the measurement of speed, esp. speed of flow, by special techniques. Subcategories:— instrument (10) |
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