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单词 motor octane number
释义

Definition of motor octane number in English:

motor octane number

noun

  • An octane number as determined by the motor method of the American Society for Testing and Materials, used chiefly for high engine speeds and loads; abbreviated MON.

Origin

1950s; earliest use found in ASTM Manual Engine Test Methods for rating Fuels.

Definition of motor octane number in US English:

motor octane number

noun

  • An octane number as determined by the motor method of the American Society for Testing and Materials, used chiefly for high engine speeds and loads; abbreviated MON.

Origin

1950s; earliest use found in ASTM Manual Engine Test Methods for rating Fuels.
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更新时间：2025/11/4 10:41:41