cr mo v steel cr4mo4v钢
steel cr mo v r4mo4v钢
cr-mo-v system crmov系
medium carbon ni-cr-mo-v steel 中碳crnimov钢
medium carbon Cr-Ni-Mo-V steel 中碳Cr
cr-ni-mo-v steel 铬镍钼钒钢
To enhance the anti-wearing ability of exhaust valve seat for a new engine, a Nb-Cr-Mo-V cast iron value seat has been developed in the First Automobile Works.
为提高新型汽车发动机排气门座的耐磨性，第一汽车制造厂研制了铌铬钼钒铸铁排气门座。
The method of measuring c, s, p, Mn, Si, Cr, Ni, Mo, V, W, ti, Nb, Al element content by DV-4 photoelectric spectroscope on one condition is introduced.
介绍了应用DV - 4光电光谱仪，仅用一种测定条件，测定高合金钢中碳、硫、磷、锰、硅、铬、镍、钼、钒、钨、钛、铌、铝元素的含量的方法。
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