单词 | constant speed |
释义 | > as lemmasconstant speed constant speed n. ΚΠ 1937 Jrnl. Royal Aeronaut. Soc. 41 146 Charts for Calculating the Performance of Airplanes having Constant Speed Propellers. 1938 Encycl. Brit. Bk. of Year 79/2 The variable pitch and especially the constant-speed airscrew have become a necessity for reasonable take-offs. < as lemmas |
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