chassis base

例句：

1. 1. The car's chassis base is made of steel.
   这辆车的底盘基础是用钢做的。
2. 2.The engineer designed the chassis base to support the heavy load.
   工程师设计了底盘基础来承受重负载。
3. 3.The new model has a more advanced chassis base than its predecessor.
   新款模型的底盘基础比前一代更先进。