?辛烷值

... 改善 improve; ameliorate; perfect ... 辛烷值 (ron) research octane number; antiknock value; astm octane number; knock rating; o.n. octane number; oct. octane number; octance value; octane grade; octane number(= octane rating); octane rating (= octane number); octane ratio; octane value; on octance number; onr octane number rating; value 掺合辛烷值 blending octane number; blending octane value ...