Aeronautics. A manoeuvre in which an aircraft in level flight loses altitude and then resumes level flight. rare.
| 单词 | θ206978 | 
| 释义 | society > travel > air or space travel > action of flying (in) aircraft > specific flying operations or procedures > 			[noun]		 > descent > and levelling out (1)		 push-down1938 Aeronautics. A manoeuvre in which an aircraft in level flight loses altitude and then resumes level flight. rare.  | 
	
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