upgrading and expansion construction

• 改扩建

upgrading and expansion construction的用法和样例：

例句

1. The process design for reconstruction and expansion engineering of Hunan Shizhuyuan Bismuth Smelter is described.
   介绍湖南柿竹园公司铋冶炼改扩建的工艺设计。
2. It is understood that the Jiayuguan airport expansion projects and new airport projects Jinchang Jinchuan has now started and will be completed in June next year in operation.
   据了解，嘉峪关机场改扩建工程和金昌金川机场新建工程，目前已经开工建设，将于明年六月全部竣工投入运营。