| 单词 | speed-cone |
| 释义 | > as lemmasspeed-cone speed-cone n. ΚΠ 1869 W. J. M. Rankine Cycl. Machine & Hand-tools 312 The most convenient way of changing the velocity-ratio of rotation of a pair of shafts..is by means of ‘speed-cones’. < as lemmas |
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