trim-tab position调整片位置
trim-tab servo调整片随动机构
trim-tab control平衡配平片操纵
rudder trim-tab control方向舵调整片操纵
rudder trim tab方向舵平衡调整片
trim tab control调整片操纵
manually operated trim tab人工操纵调整片
elevator trim tab升降舵调整片
rudder trim tab angle方向舵配平片角
N（名词） a small control surface attached to the trailing edge of a main control surface to enable the pilot to trim an aircraft 平衡调整片