gear wheel pump

例句：

1. 1. The gear pump is used to transfer fluids through a system.
   齿轮泵用于通过系统传输流体。
2. 2. The gear pump was designed to be more efficient than other types of pumps.
   齿轮泵被设计得比其他类型的泵更高效。
3. 3. The gear pump is commonly used in industrial applications where high pressure and low flow rates are required.
   齿轮泵在工业应用中非常常见，需要高压和低流量的场合。