bar iron,bar steel是什么意思

用法例句

Study on the quality of continuous casting billet for H08 weld electrode steel;

H08焊条钢连铸坯质量的研究

5mm rods after pickling results in the irregular black spots forming on the surface of spoke wire,as has no relation with phosphorized liquid.

辐条钢丝表面不规则黑斑形成的原因是６。