macroetch test造句

standard method of macroetch testing steel bars, billets, blooms, and forgings
宏观浸蚀试验钢棒材坯锭大方坯和锻件的标准方法
standard test method for macroetch testing of consumable electrode remelted steel bars and billets
自耗电极再溶化钢棒与钢坯的宏观腐蚀试验方法
It's difficult to find macroetch test in a sentence. 用macroetch test造句挺难的