主舵机 main steering gear
主舵杆 [船] rudder main stock
主动式舵角控制器 Active Yaw Control
主舵者 helmsman
主操舵装置 main steering gear
主动舵电力推进装置 active rudder electric propulsion apparatus ; active rudder electric propulsion plant
主动舵电动机 active rudder motor
主动操舵设备 active steering means
操舵主令控制器 steering master controller
本艇为钢质主船体，铝质焊接甲板室，圆舭方艉单层连续甲板纵骨架式四机四桨四舵柴油机推进巡逻艇。
The boat is built of steel hull, aluminum - welded deckhouse, round bilge, transom stern, single continuous deck, longitudinal framing, four engines, four rudders and diesel engine driven.
安排副翼、降舵及主旋翼螺距的打舵时机，使得直升机能保持固定的高度、进方向及速度。
Time the input of the cyclic& collective commands such that the helicopter maintains constant altitude, direction& speed.
气垫船动力装置由如下各部分组成：主机，功率传输装置， 推进器，主 推进器舵组合装置，垫升装置以及为动力装置服务的系统和装置。
Hovercraft is a kind of high-powered watercraft. The propulsion system of hovercraft concludes mainframe, power transfer device, thruster, air propeller installation, and assistant system.
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