释义 |
meth·yl·naphthalene \“+\ noun Etymology: methyl + naphthalene : either of two isomeric hydrocarbons C10H7CH3 occurring in coal tar and petroleum: a. : an oily liquid used as a reference fuel in determining the cetane number — called also alpha- or 1-methylnaphthalene b. : a crystalline solid used chiefly in organic synthesis (as of menadione) — called also beta- or 2-methylnaphthalene |