speedboy跑得快的运动员
speedn.速度;迅速v.加速;急行
speed of centrifugal fan离心风机转速
speed restriction signal速度限制信号
speed-based competition基于速度的竞争
speed.regulating system调速系统
speed-regulation system线速度调整系统
speed of cosmic expansion宇宙膨胀速度
speed measuring radar gun测速雷达枪
Speed ratio between rolls辊速比
speedometer of automobile汽车车速表
speedometer shaft adapter里程计轴夹