三缸发动机

three-quarter

three-fifths compromise

semi-controlled three-phase bridge rectifier circuit【电】

right three leafed rose【数】

three-phase seven-wire system

3-D picture【电影】;stereoscopic motion picture【电影】;three-dimensional film【电影】

three-phase tow-dimensional bubble shift register

three highs agriculture (high yield, high quality and high efficiency agriculture)