| 单词 | variable-area |
| 释义 | > as lemmasvariable-area variable-area n. ΚΠ 1920 Flight 12 5/1 Variable area or variable camber wings—or other means for reducing the landing speed of a machine. 1957 A. R. Manvell & J. Huntley Technique Film Music iii. 171 This optical wedge is caused to oscillate over a light slit by the motion of the pendulums, producing a variable-area type of sound-track. < as lemmas |
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