Dr Scott argues that underwater mining will be far less disruptive to the environment than terrestrial mining: there will be no piles of waste rock, since the deposits are directly on the sea floor.
斯科特辩解说水下开采将比陆地开采带来的环境破坏少得多:由于是直接在海底作业,因此将不会有大量的岩石废料。
When the Rotary cutting Drum for mining Cobalt-rich Crust is working on the fluctuant microtopography of sea floor, it's necessary to determine the cutting depth according to the mining requirement.
用滚筒式采矿头在起伏不定的微地形上切削海底富钴结壳时,需按开采要求确定其切削厚度。
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