commercially pure iron

• 工业纯铁

commercially pure iron的用法和样例：

例句

1. This paper deals with RE-B-Al diffused into the armco iron using pasty method.
   采用膏剂法对工业纯铁进行稀土硼铝共渗，观察了渗层组织，探讨了硼化物的形成机制。