Fourty富尔蒂
fournum.四
four-arm spider星形轮
four-track tape四声迹磁带,四声道磁带
four hour varnish四小时快干漆
Fourier analytics傅立叶分析法
four axle tractor四轴牵引车
four-port valve四通阀
four-wire cable四心电缆
four high hot mil四辊式热轧机
four-lipped cam四凸耳凸轮
fourhands playing四手联弹