ultrasonic metallurgy

• 超声冶金

ultrasonic metallurgy的用法和样例：

例句

1. They are mainly used in metallurgy and conveyor systems.
   它们主要应用在冶金和输送设备领域。
2. This paper summarizes the recent development in gold metallurgy in Russia.
   概括介绍俄罗斯金冶金技术发展状况，以飨读者。