pearlite rim

同义词释义

1)pearlite rim,白缘(黑心展性铸铁)2)picture frame,折缘(黑心展性铸铁)3)white heart malleable cast iron,白心展性铸铁4)black heart malleable cast ir,黑心可锻铸铁，黑心展性铸铁5)blackheart malleable cast iron,黑心展性铸铁，黑心可锻铸铁6)iron oxide covering,折心展性铸铁