gravity feed tanks

例句：

1. 1. These gravity feed tanks are designed to store and distribute water for irrigation.
   这些重力供料罐被设计来储存和分配水以进行灌溉。
2. 2.The gravity feed system is crucial for maintaining the proper level of nutrients in the soil.
   重力供料系统对于保持土壤中养分的适当水平至关重要。
3. 3. The gravity feed tanks were installed at the entrance of the greenhouse to ensure a steady supply of water.
   重力供料罐在温室入口处安装，以确保水分供应稳定。