packing machinery

例句：

1. 1.The new packing machinery has greatly improved the efficiency of our factory.
   新的打包机械大大提高了我们工厂的效率。
2. 2. The packing machinery is essential for the packaging industry.
   打包机械对于包装行业来说是必不可少的。
3. 3. The engineers are working on developing a more efficient packing machinery.
   工程师们正在努力开发一种更高效的打包机械。