black heart malleable cast iron

英 [blæk hɑːt ˈmæliəbl kɑːst ˈaɪən] 美 [blæk hɑːrt ˈmæliəbl kæst ˈaɪərn]
black heart malleable cast iron
网络  黑心可锻铸铁

  1. Effect of Ratio Si/ C of Black Heart Malleable Cast Iron upon Mechanical Properties of Electric Power Fittings
    黑心可锻铸铁中Si/C值对电力具金机械性能的影响