辛烷值降低

【化】 loss in octane number

辛烷值的英语翻译：

【化】 octane level; octane number; octane rating; octane ratio; octane value

降低的英语翻译：

bate; bring down; cut down; debase; depress; knock-down; reduce; take from
【经】 abatement; reduced price; tone down