The existence of hardinclusion may cause a great influence to variations of earthquake precursors.
硬包体的存在对地震前兆变化会产生显著影响。
2
The results show that the pre-hardened plastic-mould steel belongs to a little low machinability steel because of much hardinclusion existing in microstructure and its high strength and hardness.
结果表明,这类材料属较难加工材料,这主要是由于钢中存在大量硬质点,且材料具有较高强度和硬度所致。
3
The amount, size and distribution of non-metallic inclusion in different positions of hard wire steel with different diameters were investigated by optical microanalysis.