Iaea figures also showed the refining was less productive .

国际原子能机构的数据也表明，铀精炼的生产率下降了。

Many ships visiting australia use cheap fuels derived from the residue of the crude oil refining process .

许多驶向澳大利亚的船舶所使用的廉价燃料是从原油精炼后的残渣中提炼而来。

Rival sinopec also has its roots in the government but its mandate has been oil refining and transportation .

其竞争对手中国石化（sinopec）也出身于政府，但一直负责石油精炼与运输。

The upgrading and refining facilities required to turn tar to oil cost billions of dollars , but the technology is tried and tested .

虽然需要将焦油砂转化为石油的升级和精炼设备成本高达数十亿美元，但这种技术仍在尝试和试验阶段。

Because it is a by-product of lead refining , bismuth oxychloride should be lead free when companies begin using it in their cosmetics .

因为这是铅精炼后的副产品，在化妆品中使用它，必须除去其中混杂的铅成分。