The third part discusses the selection principle of wear-corrosion resistant materials as a referent of grindingore media.
第三部分，以湿磨的磨矿介质为产品对象，讨论了耐磨蚀材料的选择原则。
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He eventually hopes to use rock-cutting ROVs that will drive across the sea floor, grindingore as they go and sending it to the surface via a tube at a rate of 400 tonnes per hour.