问答题

简答题翻译：The casing and tubing used to bring crude oil to the surface is suspended underneath a wellhead or Christmas tree.

【参考答案】

把油气从地层带到地面的油管悬挂在井口装置上，这个装置即为采油树。

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简答题 翻译：The casing and tubing used to bring crude oil to the surface is suspended underneath a wellhead or Christmas tree.