短語詞組短語directional collective control [自]定向集合控制ground directional integrated control 地面方向控制directional valve control 方向控制回路;標(biāo)的目的節(jié)制回路directional steering control 轉(zhuǎn)向控制directional -control gyroscope 陀螺半羅盤Directional antenna control system 定向天線控制系統(tǒng)directional travel control 操向行程控制directional moving control 定向運(yùn)移控制bi -directional tension control 雙向張力控制 返回 directional control