The chemical industry depends very heavily on petroleum, natural gas, and natural gas liquids as sources of raw materials.

化学工业的原材料来源严重依赖石油、天然气和液态天然气。

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Although most separators are two-phase in design separating the gas and liquids, they can be built three-phase to separate natural gas, liquid hydrocarbons, and free water.

尽管设计中多数分离器仅分离气液两相，但可制造出分离天然气、液态烃和游离水的三相分离器。

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Liquids obtained during production of natural gas are known as natural gas liquids (NGLs) and include ethane, propane, butane and condensate, which comprises pentanes and heavier hydrocarbons.

在天然气生产中获得的液体，被称为液化天然气(液态天然气)，其中包括乙烷，丙烷，丁烷和凝析油，它包括戊烷重碳氢化合物。

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Now add onto that the fact that we have got, for the first time in a generation, growing crude oil production, growing natural gas production, and growing natural-gas liquids production.

FORBES: 3 Pipeline MLPs Delivering Growth

Jerry Swank, founder of Swank Capital, an MLP investment firm, favors players in the natural-gas-liquids business.

WSJ: Upside: Oil Partnerships Keep Rolling

Altra now reaches 1, 500 computer screens, virtually the entire natural-gas-liquids trading community.

FORBES: Web Powerhouse