raw metal

• 粗金属,金属原料

raw metal的用法和样例：

例句

1. The casting of this huge bronze vessel used over 1,000 kilograms of metal and needed 70 to 80 craftsmen to work on it.
   在当时需要七八十名工匠同时操作才能铸成，要用一千多公斤金属原料。