| 释义 |
xy·lyl·ene
\ˈzīləˌlēn\ noun
(-s)
Etymology: International Scientific Vocabulary xylyl + -ene
1. : any of several isomeric bivalent radicals C8H8 derived from the three xylenes by removal of one hydrogen atom from each of two carbon atoms; especially : any of the three radicals having the formula −CH2C6H4CH2−; phenylene-di-methylene
2. : a reactive hydrocarbon CH2 = C6H4 = CH2 that is formed by pyrolysis of para-xylene under low pressure followed by quick chilling in a solvent at -80° C and that polymerizes to an insoluble white mass at room temperature — called also para-xylylene, p-xylylene |