speedcopn.<俚>制止汽车超速行驶的警察speedn.速度；迅速v.加速；急行speed ratio control速率比控制speed of compressor压缩机转速speed determination速度鉴定speed of revolution转速speed power product速率-功耗乘积speed-change area加宽超车区speed and promotion速度与拉动speed of instrument仪表速率speed skating class速滑课speed in run - up助跑速度