| 单词 | tractor airscrew |
| 释义 | > as lemmastractor airscrew tractor airscrew n. ΚΠ 1932 Rep. & Mem. Aeronaut. Res. Committee No. 1522. 1 The magnitude of the retardation of air flow..has a mean value of 0·05 for a tractor airscrew in front of a medium body. < as lemmas |
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