论文部分内容阅读
汽车,离不开石油;石油,也同样离不开汽车(机械)。石油,为汽车(机械)提供动力之源——燃料;汽车
Car, inseparable from oil; oil, also can not be separated from the same car (machinery). Oil, the source of power for cars (machinery) - fuel; cars