Crudes contain varying levels of water, sand, asphaltenes, resins, paraffin, and other constituents that may impact refining, storing, and transportation methods.
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- 原油的含有水分、沙粒、沥青烯、树脂、石蜡和其它可能对提炼、储藏和运输方式产生影响的组成物质的含量水平层次不齐。