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Tachometer
01
转速表, 转速计
a measuring instrument displaying the revolutions per minute of an engine
Example
He monitored the tachometer to shift gears at optimal revolutions per minute.
他监控转速表以在最佳每分钟转数时换档。
She noticed the tachometer needle spike during acceleration.
她注意到转速表的指针在加速过程中飙升。
