naphcon

例句：

1. 1. The naphcon in the oil is a key component of the chemical reaction.
   油中的萘是化学反应的关键成分。
2. 2. The naphcon was extracted from the petroleum by a process called steam distillation.
   萘通过蒸汽蒸馏从石油中提取出来。
3. 3. The naphcon is used in the production of dyes and other chemicals.
   萘用于生产染料和其他化学品。