翻译请帮忙？ 回复 1# ljtjbx 文字不难，就是有点长。 when the crude oil is obtained from the field,it is taken to the refineries to be treated. the commonest form of treatment is heating. when the oil is heated,the first vapors to rise are cooled and become the finest petrol. petrol has a low boiling point; if a little is poured into the hand,it soon vaporizes. gas that comes off the oil later is condensed into paraffin. last of all the lubricating oils of various grades are produced. what remains is heavy oil that is used as fuel. 油田采出的原油被送到炼油厂处理，最常见的处理方法是加热。当原油被加热时，最先蒸发出的汽体上升、冷凝后就成为质量最好的汽油，其沸点低，如果倒一些在手上，很快就蒸发了。（汽油后）从原油中加热提取的是煤油，最后是各种等级的润滑油。剩下的残渣是重油，用来作燃料。 查看更多
第1天
关注盖德视界
添加小助手
