Ship Electrical Propulsion
a dual three-phase asynchronous electrical machine
cylindrical electrical machine
dual-rate electrical machine
high speed electrical machine
ablation mode propulsion
AC electric propulsion apparatus
AC power propulsion system
AC-DC propulsion system
active rudder electric propulsion apparatus
adjustable-pitch screw propulsion
Aerospace propulsion system
航空、航天推进系统
航天推进系统
航空/航天推进系统
航空航天推进系统
航空、航大推进系统
航空、航无推进系统
aerospace propulsion theory and engineering
air breathing propulsion system
air independent propulsion
aircraft nuclear propulsion