... Pressure-Casting Die Steel 压铸模具合金钢 Prestressed Concrete Steel Wire Strand 预应力混凝土结构用钢绞线 Primary Steel 通用钢 ...
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对702个CVN冲击试验数据应用对数数学分析模型进行回归，得到桥梁钢和焊缝的通用计算表达式。
A logarithm mathematical model is used to analyze 702 CVN impact test data and by means of regression, a general equation is obtained for bridge steel and welding seams.
通用合金弹簧钢是用途最广、最重要的弹簧材料。
The common alloy spring steels are the most important spring materials.
管路用钢法兰盘，锻制管接头，阀门和零件的通用要求规范。
Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications.
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