optimization and upgrading

• 优化升级

optimization and upgrading的用法和样例：

例句

1. The government did hard work at accelerating the optimization and upgrading of the industrial structure.
   政府在加快产业结构优化升级方面不辞辛苦。
2. Optimization of industry structure refers to the process in which the industry structure of an area evolves in the direction of rationalization.
   摘要产业结构优化升级是指特定区域的产业结构向合理化和高度化方向不断发展演进的过程。