tachometer
[tæˈkɑ:mɪtə(r)]
n.
转速计，流速计;
测速计;
旋速计;
速度计;
例句:
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To make an rpm - drop test, a tachometer is needed.
做每分钟转速下降试验时, 需要一个转速表.
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Engine crank tachometer provide VTEC control function.
发动机曲轴转数表提供VTEC控制 功能.
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New gauges are added to a high - mount tachometer and longer handlebar wires allow for easier customization.
新测量仪增加来高登上车头表并且更长的把手导线考虑到更加容易的定制.