| 单词 | tractor monoplane |
| 释义 | > as lemmastractor monoplane tractor monoplane n. ΚΠ 1960 C. H. Gibbs-Smith Aeroplane x. 54 The year 1907 saw the crystallisation of the two basic forms of early aeroplane—the pusher biplane and the tractor monoplane. < as lemmas |
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