stopped before the airplane lifts off the ground.       在飞机离地前被停止的起飞。

REGULATING VALVE, A valve for controlling pressure    调节活门，

or flow.                                                用以控制压力或流量的活门。

RELAXED, The state of an electrical component or      释放状态，

switch that is deenergized.                              电器部件或电门处于关闭或没有通电的状态。

RELAY, A switching device in which the contacts are   继电器，

opened or closed in response to separate current or     一种电门装置，其接触点随着单独的电流或电压开路或

voltage.                                              闭合。

RELIEF VALVE, A valve which prevents high pressure    释压活门，

in a system by venting the system to ambient.           通过将系统与外界相通，以防系统内压力过高的活门。

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英汉对照民用航空词典                                 BOEING

RESERVES, The required fuel remaining on-board after 备用燃油，

arriving at the destination airport as determined by 照规定，飞机在到达目标机场后，机上需要的剩余的燃

regulations.                                      油。

RESERVOIR, A container for storage of fluid.      储液箱，

                                                    用以储存液体的容器。

RESTRICTOR, An orifice for reducing the flow and  限流器，

pressure of a fluid.                                用以减低液体流量和压力的量孔。

RESTRICTOR CHECK VALVE, Same as restrictor but    限流单向活门，

allowing flow in one direction only.                一个与限流器类似，但仅允许流体向单一方向流动的活