shaft revolution indicatorshaft speed indicator轴: axle; shaft转速指示器: speed indicator; shaft revol ...转速指示器: engine eed indicator; engine speed indicator; engine-speed indicator; shaft revolution indicator; tachometer indicator发电机转速指示器: engine-speed indicator发动机转速指示器: engine indicator; engine speed indicator; engine-speed indicator下载手机词典可随时随地查词查翻译