n.粗加工；草拟
动词rough的现在分词形式.
The model is tested by a typical die-cavity roughing, and shortening machining time and balancing cutting-load can be attained. 通过典型模具型腔的粗加工试验验证，证明该进给率优化策略不仅可以缩短加工时间，而且可以使加工载荷均匀。
