Robotics: it might make sense to mine metals from the sea bed, rather than from terrestrial mines. But it will require some nifty technology.

机器人技术：该项技术可能会使从深海而不是陆地矿藏开采金属矿成为可能。但与此同时也将需要一些更加精巧的技术。

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Eogene System is the fundus of terrestrial heat exploitation and Neogene System is the principal heat reservoir and exploitation bed of Henan plain.

老第三系(E)是河南平原地热开发基底，新第三系(N)是主要热储层和开采层。

youdao

Eogene System is the fundus of terrestrial heat exploitation and Neogene System is the principal heat reservoir and exploitation bed of Henan plain.

老第三系(E)是河南平原地热开发基底，新第三系(N)是主要热储层和开采层。

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