单面定向聚能弹射孔器
directional single-plane jet perforator
面-面定向排列
face-to-face way orientationally arrangement
单向定向
unidirectional orientation
变截面柔性铰链
variable cross section flexure hinge
单面单密度
single sided single-density
单面单密度软磁盘
single-side single density floppy diskette
平面定向误差
flatness orientation error
平面柔性多体系统
planar flexible multi-body system
planar flexible multibody system