- revolutions per minute indicator
- 每分钟转数: revolutions per minute
- 指示器: indicator; pointer; director ...
- 每分钟转数: cycles per minute; number of revolution per minute; revolutio per minute; revolution per minute (rpm); revolutions per minute; revolutions perminite; rotations per minute; rpm revolutions(rounds) per minute
- 发动机每分钟转数: erpm
- 螺旋桨每分钟转数: propeller ram
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