名词
中文翻译：辛烷值严重性
同义词：
['octane number severity', 'octane number severity index']
例句：
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1. The fuel's octane number is critical for determining its performance.
燃料的辛烷值对确定其性能至关重要。
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2. The engine's efficiency is influenced by the octane number of the fuel.
发动机的效率受到燃料的辛烷值的影响。
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3.The manufacturer has raised the octane number to improve the vehicle's performance.
制造商已提高辛烷值以改善车辆的性能。