英语词汇tachograph怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	tachograph
释义	tach.o.graph HtAk7EJ7grB:f, HgrAf, $-E7grAf n [C] a machine inside a vehicle such as a truck which records speed, distance travelled and stopping periods, and which is used to control the driver's legal hours of work 速度记录器，速度计，测速仪
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