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2. Introduction





      ❖ Non-electric shock Technology


          1) Definition : Electricity flows normally in the water during flooding, so that the electric
               devices can work smoothly, and the damage caused by electric shock is prevented.


          2) Riffle Effect






















                                ① Vehicle                                      ② Ship (Vessel)




















                                               ③ Street lighting, Traffic light                         ④ Outlet                       4
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