汇流环

slip-ring / rotary electrical interface / collector ring

to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade

surname Huan

ring / hoop / loop / (chain) link / classifier for scores in archery etc / to surround / to encircle / to hem in

to remit / to converge (of rivers) / to exchange

class / collection

variant of 匯|汇[hui4]

(of rivers etc) to converge / convergence