metal surfaces

• 金属表面

metal surfaces的用法和样例：

例句

1. On reaching welding heat,the metal surfaces are pressed together.
   当金属表面达到焊接热度时就会压在一起。
2. Even the most carefully finished metal surface is not truly flat.
   即使经过最精细加工的金属表面也不会真正平整。