The mining, oil extraction, and gas extraction industries form yet another group.
从事采矿、采油和采气行业的焊工组成另外一个群体。
There are four key industrial economic sectors: the primary sector, largely raw material extraction industries such as mining and farming;
有四个主要工业经济部门：初级部门，主要原材料的开采，如采矿业和农业；第二产业，涉及炼油，建筑，制造；
Thus, joint ventures are common in resource extraction industries where capital costs are high and where the possibility of failure is also high.
因此，合资企业经常见于资本成本很高并且失败可能性也很高的资源开发产业中。
Mining was found to be the most frequent cause of pollution in the dirty 30 but metals extraction, petrochemicals and other industries were also to blame.
报告发现，在30个污染最严重地区中，采矿业是污染最主要的原因，而金属冶炼、石化及其它工业也是污染的原因。
Other industries, such as coal extraction, have incomparably higher death tolls and many more accidents.
其他的工业，像是采煤产业，有着极其高的伤亡数量和更多的事故。
Separation, extraction and concentration processes in the food, beverage and nutraceutical industries.
食品，饮料和保健品工业中的分离，提取和集中处理。
This paper introduces the fundamental principle and features of supercritical CO2 extraction, and sums up its application in perfume, medicine, food and other industries.
介绍了超临界二氧化碳萃取技术的基本原理和特点，综述了该技术在香料、医药、食品等工业中的应用。
This paper introduces the fundamental principle and features of supercritical CO2 extraction, and sums up its application in perfume, medicine, food and other industries.
介绍了超临界二氧化碳萃取技术的基本原理和特点，综述了该技术在香料、医药、食品等工业中的应用。
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