two point-speed两点速率
two point-speed method两点速率法
two-speed gear双速齿轮;双速齿轮变速装置
two-engine speed双发飞行速率;双发飞行速度
two-speed supercharger二速过给机
two-speed valve双速阀
two-speed device二速装置
two - speed sampling双速率采样
two-speed turbine双速水轮机
ADJ（形容词） (of a transmission system) having two settings (传送系统)双设置的