proportioning element

例句：

1. 1. The design of the new car incorporates a proportioning element to optimize fuel efficiency.
   这款新车的设计中融入了比例元件，以优化燃油效率。
2. 2.The engineer used a proportioning element to balance the forces in the system.
   工程师使用比例元件来平衡系统中的力。
3. 3.The manufacturer claims that their product is equipped with a proportioning element that ensures optimal performance.
   制造商声称他们的产品配备了一个比例元件，以确保最佳性能。