The Houston Ship Channel is clogged with beef fat. Unlike petroleum, which has a colorful sheen on the water's surface, beef fat turns into a solid cake, looking like a waxy ice flow.
Petroleum is the general term for solid, liquid or gaseous hydrocarbons.
石油是固体，液体或气体碳氢化合物的总称。
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Petroleum exploration and resource evaluation system has characteristics of solid theoretical basis, advanced algorithm, convenient usage and wide application.