methylnaphthalene

meth.yl.naph.tha.lene

n.（名词）
An organic compound, C0H 7CH 3, obtained from coal tar in two isomeric forms, one a liquid, the other a solid.
甲基苯：一种有机合成物，C0H 7CH 3，从煤焦油中提取，有两种异构形式，一种液态，一种固态