Constant speeddrive, a hydro-mechanical component for changing variable engine gearbox speed to constant speed to drive the electrical power.
恒速驱动装置，将发动机齿轮箱的可变转速转变为恒速以驱动电源的液压机械式部件。
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An ABB variable speeddrive system is to power the giant fan that generates subsonic wind speeds at Boeing's flagship wind tunnel in Philadelphia.
ABB的一个变速驱动系统正在为波音公司在费城的旗舰风洞的大型风扇提供动力，以制造出次音速风速。
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"We looked into installing a variable speeddrive on the press," explains Yager, "so we could stamp the aluminum at the slower speed and the steel at the original speed."