Like the First Law, the Second Law only holds in inertialreference frames.
第二定律如第一定律，也只在惯性参考系下成立。
2
Honeywell Providing fly-by-wire flight control system, inertialreference and air data systems, auxiliary power unit, wheels and brakes.
霍尼韦尔提供电传飞控系统，惯性参考和空中数据系统，辅助动力装置，机轮刹车。
3
It incorporates active radar with an inertialreference unit and micro-computer system, which makes the missile less dependent upon the fire-control system of the aircraft.