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矿石加工
The second part of the secretariat's technical programme currently focuses on the question of whether it is possible to recover rare earth elements in the very first step of an ore-processing system without impairing the recovery of the main metals.
The second part of the technical study, currently under way, addresses the viability of their commercial extraction, including metallurgical factors, ore-processing costs and recovery efficiencies of rare earth elements as by-products of mining seabed deposits.
Number of miner families trained in the use and benefits of cleaner ore-processing technologies.
接受了关于矿石处理洁净技术使用和好处方面培训的矿工家庭数目。
Since the 1930's, we have been perfecting our field welding capabilities for surface mining equipment as well as ore-processing systems.
自 20 世纪 30 年代起,我们一直在致力于完善我们露天开采设备及选矿系统的现场焊接服务。
"China still needs a lot of steel for infrastructure, housing projects and rails," Li Yang, CAA's chairman and chief executive, yelled as ore-processing machinery clanked noisily nearby. "The only problem is the pricing."
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