free-machining

例句：

1. 1. The company's new product line is designed for free-machining enthusiasts.
   该公司的新产品线是为自由加工爱好者设计的。
2. 2. The artisans use traditional techniques to create free-machining jewelry.
   这些工匠使用传统技术来制作自由加工的珠宝。
3. 3. Themachine tool industry has been revolutionized bythe development of free-machiningtechnology.
   自由加工技术的发展已经改变了机床工具行业。