球状波来体 Globular pearlite

微细波来体 fine pearlite

波来体基 pearlite matrix

球面波来体 spherical pearlite

粒状波来体 globular pearbite

层状波来体 lemellar pearlite

波来体可锻铸铁 pearlite mallea-ble iron

肥粒铁-波来体 ferritic-pearbite