活塞组件的动力学分析
Dynamic Analysis of Piston Components
活塞组瞬态摩擦力
Instantaneous Friction Force of Piston Assembly
活性粉末混凝土预应力叠合梁
RPC unbonded prestressed composite beam
火电厂热力系统
Thermodynamic System in Thermal Power Plant
火箭推力的综合数据自动处理
RAPID Rocketdyne Automatic Processing of Integrated Data
火力控制系统
firing control system
Fire control system
airborne fire control system
AFCS
火力控制与指挥
fire control and command control