作者: Alan J. Wheatley , Christopher D. Anderson , Aaron Irvin
DOI:
关键词: Hinge 、 Aperture 、 Head (vessel) 、 Marine engineering 、 Acoustics 、 Engineering
摘要: An air freshener has a vent rod and scent material carried by the rod. A head is pivotally coupled to hinge between including an axel in aperture. plurality of petals pivotal with respect