control of the pitch of an aircraft's propellers or (esp.) a helicopter's rotors; apparatus for this; (also) control of the pitching motion of an…
| 单词 | θ207016 |
| 释义 | society > travel > air or space travel > action of flying (in) aircraft > specific flying operations or procedures > [noun] > control of pitching motion (1) pitch control1930 control of the pitch of an aircraft's propellers or (esp.) a helicopter's rotors; apparatus for this; (also) control of the pitching motion of an… |
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