“速度计”的拼音为：sù dù jì...

用来测定速度的仪器是速度计.The instrument that measures the speed is a speedometer.速度计显示时速达120英里.The speedometer was touching 120 mph.速度计指示着每小时95英里.The speedometer was indicating 95 mph....

“速度计”的英语可以翻译为：velograph，velocimeter，velometer，tachometer，dromometer ...