tachographs是什么意思？

tachographs

• n. 转速图表( tachograph的名词复数 )；

例句

• Commercial vehicles, coaches and lorries are required by law to be fitted with tachographs. 法律规定商用车辆、长途汽车和卡车要安装转速计。

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  (卡车、长途汽车等的)速度里程仪
  A tachograph is a device that is put in vehicles such as lorries and coaches in order to record information such as how fast the vehicle goes, how far it travels, and the number of breaks the driver takes.