车轮油缸活塞环密封座
wheel cylinder piston cup seal seat
签名过滤系统
signature filtering scheme
签名鉴定系统
signature verification system
前铲斗液压系统
front shovel hydraulic system
front shovel hydraulics
前端附件驱动系统
front end accessory drive system
前后处理系统
Pre- and Post-processing System
pre-and post-processing system
Pre-and Post Treatment System
前后置处理系统
Pre processing and postprocessing system
前进基地系统书刊
advance base system publications
前进之水面飞弹系统
advanced surface missile system {= ASMS
前馈滤波系统
the feed-forward filtering system