| 单词 | oval-engine |
| 释义 | > as lemmasoval-engine ΚΠ 1680 J. Moxon Mech. Exercises I. xiv. 242 These Oval-Engines, Swash-Engines, and all other Engines. 1780 Philos. Trans. (Royal Soc.) 70 382 In the turning of ovals, the top of the rest which supports the tool is always made to pass through..the two centers round which the oval engine turns. 1864 S. Smiles Industr. Biogr. 257 We find Mr. Thomas Oldfield..named as an excellent maker of oval-engines. < as lemmas |
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