It is a type of plastic that is made from ethylene (found in crude oil) and chlorine (found in regular salt).

它是一种塑料，由乙烯(原油中提炼)和氯(粗盐的成分)。

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Using Changqing and Qinghai waxy crude oils as research objects, the depressive effects of ethylene-vinyl acetate (EVA) copolymer pour point depressant on the waxy crude oils were studied.

以长庆、青海含蜡原油为研究对象，考察乙烯-醋酸乙烯酯共聚物(简称EVA)降凝剂对含蜡原油的降凝效果。

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The companies cut down more than 30% of energy consumption per unit of production of alumina, ethylene and caustic soda, and over 10% for crude-oil processing, electrolytic aluminum and cement.

这些公司从每单位氧化铝，乙烯和烧碱的生产中减少了30%能源消耗，原油加工，电解铝和水泥生产中则减少了10%以上。

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Ethylene can be made from crude oil or the heavier gases that come out of natural gas wells (ethane, propane and butane).

FORBES: Magazine Article