annular
131Closed wing — A closed wing is a non planar wing planform concept. The term closed wing encompasses a number of designs, including the annular wing (commonly known as the cylindrical or ring wing), the joined wing, and the box wing. A closed wing can be… …
132ABEC — Annular bearing engineer council ABEC (Annular Bearing Engineer Council) est une norme américaine qui mesure la côte de tolérance des roulements à billes. Elle est notée par des nombres impairs, les plus faibles étant de plus faible qualité de… …
