Using efficiency

• 使用效率

Using efficiency的用法和样例：

例句

1. They operate at extremely high efficiency, and their main by-product is water.
   这种电池的使用效率极高，而主要的副产品只是水。
2. Now China ranks the antecedency in the world in the using efficiency and freight amount per kilometre.
   目前中国铁路使用效率及平均每公里货运量，均位居世界前列。