单词	planform
释义	planform noun plan·​form ˈplan-ˌfȯrm  : the contour of an object (such as an airplane) or mass as viewed from above Example Sentences Recent Examples on the Web The bad news is the tailess, flying wing planform of the X-47B comes with some inherent stability and low speed flying issues that make the take off and landing from an aircraft carrier a real engineering challenge. Jason Paur, WIRED, 3 Nov. 2009 Word History First Known Use 1908, in the meaning defined above
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