“重选”用英语怎么说？

TL型水套式离心选矿机是一种新型重选设备.STL jacket centrifugal concentrator is a kind of gravity concentration equipment.现任市长并不在重选名单之列.The current mayor is not on the ticket for re - election.云南某石英脉型白钨矿原采用重选,生产工艺指标不理想.The result of gravity...