body flange

例句：

1. 1. The machine's body flange is designed to fit snugly into the chassis.
   这台机器的主体法兰设计得能紧密地嵌入底盘。
2. 2. The new design uses a more efficient body flange for better fuel efficiency.
   新的设计使用了更高效的主体法兰以获得更好的燃油效率。
3. 3. The engineers were working on modifying the body flange to improve the vehicle's handling.
   工程师们正在修改主体法兰以提高车辆的操控性能。