| 单词 |
research octane number |
| 释义 |
DictionarySeeoctane ratingresearch octane number
research octane number[ri′sərch ′äk‚tān ‚nəm·bər] (engineering) An expression for the antiknock rating of a motor gasoline as a guide to how vehicles will operate under mild conditions associated with low engine speeds. See RON
See RON |
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