The surface effectively resists corrosive action of water, saltwater spray, alkalies, crude oil, and natural gas.

这种表面能有效地抵御水、盐雾、碱、原油和天然气的腐蚀反应。

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Once we get down to the oil, it usually flows to surface because great pressure, either from gas or water, is pushing it.

一旦到达油层，石油就会由于地下巨大压力涌到地面上来，这种巨大压力来自地下天然气或水。

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Once we get down to the oil, it usually flows to the surface because great pressure either from gas or water, is pushing it.

一旦到达油层，石油就会由于地下巨大的压力流到地面上来，这种巨大的压力来自地下天然气或水。

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Until recently, oil and gas produced from deep-water fields have been brought to the surface and transported to onshore processing facilities.

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