石油一旦从矿床里采取出来,似乎一切困难都成为过去了。事实上并不如此。此后还有许多工作。从油井里取得的石油,还不是就可以运送给消费者的完成的制品。对於这种所谓原油还要进行炼制。要从其中取得为飞机和汽车用的汽油,机器和机械用的润滑油,点灯和拖拉机用的煤油,狄塞尔引擎用的燃料油(柴油)。这些还不过是其中少数的几种而已。现在我们可以从石油里得到一千种以上不同的产品呢!假使我们把这 Once the oil was taken from the deposit it seemed as if all the difficulties had passed. In fact it is not. There is still a lot of work going on Oil taken from the well is not yet the finished product that can be delivered to consumers. For this so-called crude oil but also refining. To obtain from them for the aircraft and automotive gasoline, machinery and machinery lubricants, lighting and tractor kerosene, Diesel engine fuel oil (diesel). These are just a few of the few. Now we can get more than a thousand different products from the oil! If we take this