high-grade petrol 高级汽油
winter grade petrol 冬用汽油
summer grade petrol 夏用汽油
regular grade petrol 一般等级汽油
But distillation does not produce enough high grade petrol to meet today's high demand.
但是，蒸馏不能产生出足够的优质汽油来满足今天的大量需要。收藏。
Ethanol's higher octane rating (around 96 compared with 91 for premium grade petrol) allows them to have a higher compression ratio-and thereby deliver more power as a result.
乙醇有更高的辛烷值(大约为96，相比而言，优质汽油的辛烷值为91)，这能使它们有更高的压缩比——因此，能释放更多的能量。
The truth is, a higher petrol grade is not necessarily better for your car.
事实是，一个更高的汽油品位不一定是更好的为你的车。
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