7.14回火钢轴承的测试数据，实验数据非常难得。是在洛阳轴承厂测试几个月得到的数据。对于科研有需要的朋友，这份数据非常有用。-Tempering bearing steel, this is tempered steel experimental data, very rare.If you have any help to you, you can save data collected a lot of time.