弹簧用碳素钢及合金钢棒的英文

standard specification for carbon and alloy steel bars for springs

• 弹簧:    spring; mechanical ...
• 用:    40分钟跑完全程 run the c ...
• 碳素钢:    carbon steel
• 及:    reach; come up to
• 合金钢:    alloy steel

例句与用法

1. Standard specification for carbon and alloy steel bars for springs
   弹簧用碳素钢及合金钢棒的标准规范