Whenyouthinkofbatteries,you'lllikelythinkaboutthempower...
问题详情：Whenyouthinkofbatteries,you'lllikelythinkaboutthempoweringupremotecontrols,cellphones,flashlightsandtoys.Butsomepeoplecarryabatteryaroundintheirbodytopowerapacemaker(起搏器).Itisn'treallyple...