1·The results show that the addition of Zr increases the content of acicular ferrite and improves the microstructure of weld metal.
结果表明，锆的加入增加了焊缝金属中针状铁素体的含量，改善了焊缝金属的微观组织。
2·The results show that the steel plate has excellent integrated mechanical properties, when it obtain the acicular ferrite.
结果表明，当获得针状铁素体组织时，钢板具有最佳的综合力学性能。
3·The results show that, with the increase of Mo content, the acicular ferrite's content increases, and M-A microstructure appears.
结果表明：随钼的质量分数增加，针状铁素体的含量增加，并且出现了M - A组织。
4·The ratio of acicular ferrite may increase by raising cooling speed and decreasing final cooling temperature.
提高冷却速度和降低终冷温度可以增加针状铁素体的比例。
5·Mainly its metallographic structure consists of acicular ferrite and martensite.
钢的组织主要由针状铁素体和马氏体两相组成。