{TAIL ~ A cold forging forming method} for forming a three dimensional hollow article without rough edges, wherein, an alloy of low melting point is used instead of mercury as a filler with {HEAD ~ plasticity} 
{ TAIL ~ A cold forging forming method } for forming a three dimensional hollow article without rough edges , wherein , an alloy of low melting point is used instead of mercury as a filler with { HEAD ~ plasticity }
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