单面单密度
single sided single-density
单面单密度软磁盘
single-side single density floppy diskette
差速器和行星齿轮轴紧固件
differential and planetary axle fastener
低碳紧固件
low carbon steel for fasteners
电线线束紧固件总成
Fastener GP-wiring harness
高强度耐腐蚀紧固件
high strength corrosion resistance fastener
隔爆外壳紧固件的设计
Design of the Fastener for Flameproof Enclosure